What is the purpose of the product order option in the column property sheet?
To specify the order of individual group evaluation in a cross products.
What is the use of image_zoom built-in?
To manipulate images in image items.
How do you reference a parameter indirectly?
To indirectly reference a parameter use the NAME IN, COPY 'built-ins to indirectly set and reference the parameters value' Example name_in ('capital parameter my param'), Copy ('SURESH','Parameter my_param')
What is a timer?
Timer is an "internal time clock" that you can programmatically create to perform an action each time the times.
What are the two phases of block coordination?
There are two phases of block coordination: the clear phase and the population phase. During, the clear phase, Oracle Forms navigates internally to the detail block and flushes the obsolete detail records. During the population phase, Oracle Forms issues a SELECT statement to repopulate the detail block with detail records associated with the new master record. These operations are accomplished through the execution of triggers.
What are Most Common types of Complex master-detail relationships?
There are three most common types of complex master-detail relationships:
master with dependent details
master with independent details
detail with two masters
What is a text list?
The text list style list item appears as a rectangular box which displays the fixed number of values. When the text list contains values that can not be displayed, a vertical scroll bar appears, allowing the operator to view and select undisplayed values.
What is term?
The term is terminal definition file that describes the terminal form which you are using r20run.
What is use of term?
The term file which key is correspond to which oracle report functions.
What is pop list?
The pop list style list item appears initially as a single field (similar to a text item field). When the operator selects the list icon, a list of available choices appears.
What is the maximum no of chars the parameter can store?
The maximum no of chars the parameter can store is only valid for char parameters, which can be upto 64K. No parameters default to 23Bytes and Date parameter default to 7Bytes.
What are the default extensions of the files created by library module?
The default file extensions indicate the library module type and storage format .pll - pl/sql library module binary
What are the Coordination Properties in a Master-Detail relationship?
The coordination properties are
Deferred
Auto-Query
These Properties determine when the population phase of block
coordination should occur.
How do you display console on a window ?
The console includes the status line and message line, and is displayed at the bottom of the window to which it is assigned.To specify that the console should be displayed, set the console window form property to the name of any window in the form. To include the console, set console window to Null.
What are the different Parameter types?
Text ParametersData Parameters
State any three mouse events system variables?
System.mouse_button_pressedSystem.mouse_button_shift
What are the types of calculated columns available?
Summary, Formula, Placeholder column.
Explain about stacked canvas views?
Stacked canvas view is displayed in a window on top of, or "stacked" on the content canvas view assigned to that same window. Stacked canvas views obscure some part of the underlying content canvas view, and or often shown and hidden programmatically.
How does one do off-line database backups? (for DBA )
Shut down the database from sqlplus or server manager. Backup all files to secondary storage (eg. tapes). Ensure that you backup all data files, all control files and all log files. When completed, restart your database.
Do the following queries to get a list of all files that needs to be backed up:
select name from sys.v_$datafile;
select member from sys.v_$logfile;
select name from sys.v_$controlfile;
Sometimes Oracle takes forever to shutdown with the "immediate" option. As workaround to this problem, shutdown using these commands:
alter system checkpoint;
shutdown abort
startup restrict
shutdown immediate
Note that if you database is in ARCHIVELOG mode, one can still use archived log files to roll forward from an off-line backup. If you cannot take your database down for a cold (off-line) backup at a convenient time, switch your database into ARCHIVELOG mode and perform hot (on-line) backups.
What is the difference between SHOW_EDITOR and EDIT_TEXTITEM?
Show editor is the generic built-in which accepts any editor name and takes some input string and returns modified output string. Whereas the edit_textitem built-in needs the input focus to be in the text item before the built-in is executed.
What are the built-ins that are used to Attach an LOV programmatically to an item?
set_item_property
get_item_property
(by setting the LOV_NAME property)
How does one do on-line database backups? (for DBA )
Each tablespace that needs to be backed-up must be switched into backup mode before copying the files out to secondary storage (tapes). Look at this simple example.
ALTER TABLESPACE xyz BEGIN BACKUP;
! cp xyfFile1 /backupDir/
ALTER TABLESPACE xyz END BACKUP;
It is better to backup tablespace for tablespace than to put all tablespaces in backup mode. Backing them up separately incurs less overhead. When done, remember to backup your control files. Look at this example:
ALTER SYSTEM SWITCH LOGFILE; -- Force log switch to update control file headers
ALTER DATABASE BACKUP CONTROLFILE TO '/backupDir/control.dbf';
NOTE: Do not run on-line backups during peak processing periods. Oracle will write complete database blocks instead of the normal deltas to redo log files while in backup mode. This will lead to excessive database archiving and even database freezes.
How does one backup a database using RMAN? (for DBA )
The biggest advantage of RMAN is that it only backup used space in the database. Rman doesn't put tablespaces in backup mode, saving on redo generation overhead. RMAN will re-read database blocks until it gets a consistent image of it. Look at this simple backup example.
rman target sys/*** nocatalog
run {
allocate channel t1 type disk;
backup
format '/app/oracle/db_backup/%d_t%t_s%s_p%p'
( database );
release channel t1;
}
Example RMAN restore:
rman target sys/*** nocatalog
run {
allocate channel t1 type disk;
# set until time 'Aug 07 2000 :51';
restore tablespace users;
recover tablespace users;
release channel t1;
}
The examples above are extremely simplistic and only useful for illustrating basic concepts. By default Oracle uses the database controlfiles to store information about backups. Normally one would rather setup a RMAN catalog database to store RMAN metadata in. Read the Oracle Backup and Recovery Guide before implementing any RMAN backups.
Note: RMAN cannot write image copies directly to tape. One needs to use a third-party media manager that integrates with RMAN to backup directly to tape. Alternatively one can backup to disk and then manually copy the backups to tape.
What are the different file extensions that are created by oracle reports?
Rep file and Rdf file.
What is strip sources generate options?
Removes the source code from the library file and generates a library files that contains only pcode. The resulting file can be used for final deployment, but can not be subsequently edited in the designer.ex. f45gen module=old_lib.pll userid=scott/tiger strip_source YES output_file
How does one put a database into ARCHIVELOG mode? (for DBA )
The main reason for running in archivelog mode is that one can provide 24-hour availability and guarantee complete data recoverability. It is also necessary to enable ARCHIVELOG mode before one can start to use on-line database backups. To enable ARCHIVELOG mode, simply change your database startup command script, and bounce the database:
SQLPLUS> connect sys as sysdba
SQLPLUS> startup mount exclusive;
SQLPLUS> alter database archivelog;
SQLPLUS> archive log start;
SQLPLUS> alter database open;
NOTE1: Remember to take a baseline database backup right after enabling archivelog mode. Without it one would not be able to recover. Also, implement an archivelog backup to prevent the archive log directory from filling-up.
NOTE2: ARCHIVELOG mode was introduced with Oracle V6, and is essential for database point-in-time recovery. Archiving can be used in combination with on-line and off-line database backups.
NOTE3: You may want to set the following INIT.ORA parameters when enabling ARCHIVELOG mode: log_archive_start=TRUE, log_archive_dest=... and log_archive_format=...
NOTE4: You can change the archive log destination of a database on-line with the ARCHIVE LOG START TO 'directory'; statement. This statement is often used to switch archiving between a set of directories.
NOTE5: When running Oracle Real Application Server (RAC), you need to shut down all nodes before changing the database to ARCHIVELOG mode.
What is the basic data structure that is required for creating an LOV?
Record Group.
How does one backup archived log files? (for DBA )
One can backup archived log files using RMAN or any operating system backup utility. Remember to delete files after backing them up to prevent the archive log directory from filling up. If the archive log directory becomes full, your database will hang! Look at this simple RMAN backup script:
RMAN> run {
2> allocate channel dev1 type disk;
3> backup
4> format '/app/oracle/arch_backup/log_t%t_s%s_p%p'
5> (archivelog all delete input);
6> release channel dev1;
7> }
Does Oracle write to data files in begin/hot backup mode? (for DBA )
Oracle will stop updating file headers, but will continue to write data to the database files even if a tablespace is in backup mode.
In backup mode, Oracle will write out complete changed blocks to the redo log files. Normally only deltas (changes) are logged to the redo logs. This is done to enable reconstruction of a block if only half of it was backed up (split blocks). Because of this, one should notice increased log activity and archiving during on-line backups.
Oracle Interview Questions And Answers [6]
What is mean by Program Global Area (PGA)?
It is area in memory that is used by a single Oracle user process.
What is a data segment?
Data segment are the physical areas within a database block in which the data associated with tables and clusters are stored.
What are the factors causing the reparsing of SQL statements in SGA?
Due to insufficient shared pool size.
Monitor the ratio of the reloads takes place while executing SQL statements. If the ratio is greater than 1 then increase the SHARED_POOL_SIZE.
What are clusters?
Clusters are groups of one or more tables physically stores together to share common columns and are often used together.
What is cluster key?
The related columns of the tables in a cluster are called the cluster key.
Do a view contain data?
Views do not contain or store data.
What is user Account in Oracle database?
A user account is not a physical structure in database but it is having important relationship to the objects in the database and will be having certain privileges.
How will you enforce security using stored procedures?
Don't grant user access directly to tables within the application. Instead grant the ability to access the procedures that access the tables. When procedure executed it will execute the privilege of procedures owner. Users cannot access tables except via the procedure.
What are the dictionary tables used to monitor a database space?
DBA_FREE_SPACE
DBA_SEGMENTS
DBA_DATA_FILES.
Can a property clause itself be based on a property clause?
Yes
If a parameter is used in a query without being previously defined, what diff. exist between. report 2.0 and 2.5 when the query is applied?
While both reports 2.0 and 2.5 create the parameter, report 2.5 gives a message that a bind parameter has been created.
What are the sql clauses supported in the link property sheet?
Where start with having.
What is trigger associated with the timer?
When-timer-expired.
What are the trigger associated with image items?
When-image-activated fires when the operators double clicks on an image itemwhen-image-pressed fires when an operator clicks or double clicks on an image item
What are the different windows events activated at runtimes?
When_window_activated
When_window_closed
When_window_deactivated
When_window_resized
Within this triggers, you can examine the built in system variable system. event_window to determine the name of the window for which the trigger fired.
When do you use data parameter type?
When the value of a data parameter being passed to a called product is always the name of the record group defined in the current form. Data parameters are used to pass data to products invoked with the run_product built-in subprogram.
What is difference between open_form and call_form?
when one form invokes another form by executing open_form the first form remains displayed, and operators can navigate between the forms as desired. when one form invokes another form by executing call_form, the called form is modal with respect to the calling form. That is, any windows that belong to the calling form are disabled, and operators cannot navigate to them until they first exit the called form.
What is new_form built-in?
When one form invokes another form by executing new_form oracle form exits the first form and releases its memory before loading the new form calling new form completely replace the first with the second. If there are changes pending in the first form, the operator will be prompted to save them before the new form is loaded.
What is the "LOV of Validation" Property of an item? What is the use of it?
When LOV for Validation is set to True, Oracle Forms compares the current value of the text item to the values in the first column displayed in the LOV. Whenever the validation event occurs. If the value in the text item matches one of the values in the first column of the LOV, validation succeeds, the LOV is not displayed, and processing continues normally. If the value in the text item does not match one of the values in the first column of the LOV, Oracle Forms displays the LOV and uses the text item value as the search criteria to automatically reduce the list.
What is the diff. when Flex mode is mode on and when it is off?
When flex mode is on, reports automatically resizes the parent when the child is resized.
What is the diff. when confine mode is on and when it is off?
When confine mode is on, an object cannot be moved outside its parent in the layout.
What are visual attributes?
Visual attributes are the font, color, pattern proprieties that you set for form and menu objects that appear in your application interface.
Which of the two views should objects according to possession?
view by structure.
What are the two types of views available in the object navigator(specific to report 2.5)?
View by structure and view by type .
What are the vbx controls?
Vbx control provide a simple method of building and enhancing user interfaces. The controls can use to obtain user inputs and display program outputs.vbx control where originally develop as extensions for the ms visual basic environments and include such items as sliders, rides and knobs.
What is the use of transactional triggers?
Using transactional triggers we can control or modify the default functionality of the oracle forms.
How do you create a new session while open a new form?
Using open_form built-in setting the session option Ex. Open_form('Stocks ',active, session). when invoke the multiple forms with open form and call_form in the same application, state whether the following are true/False
What are the ways to monitor the performance of the report?
Use reports profile executable statement. Use SQL trace facility.
If two groups are not linked in the data model editor, What is the hierarchy between them?
Two group that is above are the left most rank higher than the group that is to right or below it.
It is area in memory that is used by a single Oracle user process.
What is a data segment?
Data segment are the physical areas within a database block in which the data associated with tables and clusters are stored.
What are the factors causing the reparsing of SQL statements in SGA?
Due to insufficient shared pool size.
Monitor the ratio of the reloads takes place while executing SQL statements. If the ratio is greater than 1 then increase the SHARED_POOL_SIZE.
What are clusters?
Clusters are groups of one or more tables physically stores together to share common columns and are often used together.
What is cluster key?
The related columns of the tables in a cluster are called the cluster key.
Do a view contain data?
Views do not contain or store data.
What is user Account in Oracle database?
A user account is not a physical structure in database but it is having important relationship to the objects in the database and will be having certain privileges.
How will you enforce security using stored procedures?
Don't grant user access directly to tables within the application. Instead grant the ability to access the procedures that access the tables. When procedure executed it will execute the privilege of procedures owner. Users cannot access tables except via the procedure.
What are the dictionary tables used to monitor a database space?
DBA_FREE_SPACE
DBA_SEGMENTS
DBA_DATA_FILES.
Can a property clause itself be based on a property clause?
Yes
If a parameter is used in a query without being previously defined, what diff. exist between. report 2.0 and 2.5 when the query is applied?
While both reports 2.0 and 2.5 create the parameter, report 2.5 gives a message that a bind parameter has been created.
What are the sql clauses supported in the link property sheet?
Where start with having.
What is trigger associated with the timer?
When-timer-expired.
What are the trigger associated with image items?
When-image-activated fires when the operators double clicks on an image itemwhen-image-pressed fires when an operator clicks or double clicks on an image item
What are the different windows events activated at runtimes?
When_window_activated
When_window_closed
When_window_deactivated
When_window_resized
Within this triggers, you can examine the built in system variable system. event_window to determine the name of the window for which the trigger fired.
When do you use data parameter type?
When the value of a data parameter being passed to a called product is always the name of the record group defined in the current form. Data parameters are used to pass data to products invoked with the run_product built-in subprogram.
What is difference between open_form and call_form?
when one form invokes another form by executing open_form the first form remains displayed, and operators can navigate between the forms as desired. when one form invokes another form by executing call_form, the called form is modal with respect to the calling form. That is, any windows that belong to the calling form are disabled, and operators cannot navigate to them until they first exit the called form.
What is new_form built-in?
When one form invokes another form by executing new_form oracle form exits the first form and releases its memory before loading the new form calling new form completely replace the first with the second. If there are changes pending in the first form, the operator will be prompted to save them before the new form is loaded.
What is the "LOV of Validation" Property of an item? What is the use of it?
When LOV for Validation is set to True, Oracle Forms compares the current value of the text item to the values in the first column displayed in the LOV. Whenever the validation event occurs. If the value in the text item matches one of the values in the first column of the LOV, validation succeeds, the LOV is not displayed, and processing continues normally. If the value in the text item does not match one of the values in the first column of the LOV, Oracle Forms displays the LOV and uses the text item value as the search criteria to automatically reduce the list.
What is the diff. when Flex mode is mode on and when it is off?
When flex mode is on, reports automatically resizes the parent when the child is resized.
What is the diff. when confine mode is on and when it is off?
When confine mode is on, an object cannot be moved outside its parent in the layout.
What are visual attributes?
Visual attributes are the font, color, pattern proprieties that you set for form and menu objects that appear in your application interface.
Which of the two views should objects according to possession?
view by structure.
What are the two types of views available in the object navigator(specific to report 2.5)?
View by structure and view by type .
What are the vbx controls?
Vbx control provide a simple method of building and enhancing user interfaces. The controls can use to obtain user inputs and display program outputs.vbx control where originally develop as extensions for the ms visual basic environments and include such items as sliders, rides and knobs.
What is the use of transactional triggers?
Using transactional triggers we can control or modify the default functionality of the oracle forms.
How do you create a new session while open a new form?
Using open_form built-in setting the session option Ex. Open_form('Stocks ',active, session). when invoke the multiple forms with open form and call_form in the same application, state whether the following are true/False
What are the ways to monitor the performance of the report?
Use reports profile executable statement. Use SQL trace facility.
If two groups are not linked in the data model editor, What is the hierarchy between them?
Two group that is above are the left most rank higher than the group that is to right or below it.
Oracle Interview Questions And Answers [5]
Where are my TEMPFILES, I don't see them in V$DATAFILE or DBA_DATA_FILE? (for DBA)
Tempfiles, unlike normal datafiles, are not listed in v$datafile or dba_data_files. Instead query v$tempfile or dba_temp_files:
SELECT * FROM v$tempfile;
SELECT * FROM dba_temp_files;
How do I find used/free space in a TEMPORARY tablespace? (for DBA )
Unlike normal tablespaces, true temporary tablespace information is not listed in DBA_FREE_SPACE. Instead use the V$TEMP_SPACE_HEADER view:
SELECT tablespace_name, SUM (bytes used), SUM (bytes free)
FROM V$temp_space_header
GROUP BY tablespace_name;
What is a profile ?
Each database user is assigned a Profile that specifies limitations on various system resources available to the user.
How will you enforce security using stored procedures?
Don't grant user access directly to tables within the application. Instead grant the ability to access the procedures that access the tables. When procedure executed it will execute the privilege of procedures owner. Users cannot access tables except via the procedure.
How can one see who is using a temporary segment? (for DBA )
For every user using temporary space, there is an entry in SYS.V$_LOCK with type 'TS'.
All temporary segments are named 'ffff.bbbb' where 'ffff' is the file it is in and 'bbbb' is first block of the segment. If your temporary tablespace is set to TEMPORARY, all sorts are done in one large temporary segment. For usage stats, see SYS.V_$SORT_SEGMENT
From Oracle 8.0, one can just query SYS.v$sort_usage. Look at these examples:
select s.username, u."USER", u.tablespace, u.contents, u.extents, u.blocks
from sys.v_$session s, sys.v_$sort_usage u
where s.addr = u.session_addr
/
select s.osuser, s.process, s.username, s.serial#,
Sum (u.blocks)*vp.value/1024 sort_size
from sys.v_$session s, sys.v_$sort_usage u, sys.v_$parameter VP
where s.saddr = u.session_addr
and vp.name = 'db_block_size'
and s.osuser like '&1'
group by s.osuser, s.process, s.username, s.serial#, vp.value
/
How does one get the view definition of fixed views/tables?
Query v$fixed_view_definition. Example: SELECT * FROM v$fixed_view_definition WHERE view_name='V$SESSION';
What are the dictionary tables used to monitor a database spaces ?
DBA_FREE_SPACE
DBA_SEGMENTS
DBA_DATA_FILES.
How can we specify the Archived log file name format and destination?
By setting the following values in init.ora file. LOG_ARCHIVE_FORMAT = arch %S/s/T/tarc (%S - Log sequence number and is zero left paded, %s - Log sequence number not padded. %T - Thread number lef-zero-paded and %t - Thread number not padded). The file name created is arch 0001 are if %S is used. LOG_ARCHIVE_DEST = path.
What is user Account in Oracle database?
An user account is not a physical structure in Database but it is having important relationship to the objects in the database and will be having certain privileges.
When will the data in the snapshot log be used?
We must be able to create a after row trigger on table (i.e., it should be not be already available) After giving table privileges. We cannot specify snapshot log name because oracle uses the name of the master table in the name of the database objects that support its snapshot log. The master table name should be less than or equal to 23 characters. (The table name created will be MLOGS_tablename, and trigger name will be TLOGS name).
What dynamic data replication?
Updating or Inserting records in remote database through database triggers. It may fail if remote database is having any problem.
What is Two-Phase Commit ?
Two-phase commit is mechanism that guarantees a distributed transaction either commits on all involved nodes or rolls back on all involved nodes to maintain data consistency across the global distributed database. It has two phase, a Prepare Phase and a Commit Phase.
How can you Enforce Referential Integrity in snapshots ?
Time the references to occur when master tables are not in use. Peform the reference the manually immdiately locking the master tables. We can join tables in snopshots by creating a complex snapshots that will based on the master tables.
What is a SQL * NET?
SQL *NET is ORACLE's mechanism for interfacing with the communication protocols used by the networks that facilitate distributed processing and distributed databases. It is used in Clint-Server and Server-Server communications.
What is a SNAPSHOT ?
Snapshots are read-only copies of a master table located on a remote node which is periodically refreshed to reflect changes made to the master table.
What is the mechanism provided by ORACLE for table replication ?
Snapshots and SNAPSHOT LOGs
What is snapshots?
Snapshot is an object used to dynamically replicate data between distribute database at specified time intervals. In ver 7.0 they are read only.
What are the various type of snapshots?
Simple and Complex.
Describe two phases of Two-phase commit ?
Prepare phase - The global coordinator (initiating node) ask a participants to prepare (to promise to commit or rollback the transaction, even if there is a failure) Commit - Phase - If all participants respond to the coordinator that they are prepared, the coordinator asks all nodes to commit the transaction, if all participants cannot prepare, the coordinator asks all nodes to roll back the transaction.
What is snapshot log ?
It is a table that maintains a record of modifications to the master table in a snapshot. It is stored in the same database as master table and is only available for simple snapshots. It should be created before creating snapshots.
What are the benefits of distributed options in databases?
Database on other servers can be updated and those transactions can be grouped together with others in a logical unit.
Database uses a two phase commit.
What are the options available to refresh snapshots ?
COMPLETE - Tables are completely regenerated using the snapshots query and the master tables every time the snapshot referenced.
FAST - If simple snapshot used then a snapshot log can be used to send the changes to the snapshot tables.
FORCE - Default value. If possible it performs a FAST refresh; Otherwise it will perform a complete refresh.
What is a SNAPSHOT LOG ?
A snapshot log is a table in the master database that is associated with the master table. ORACLE uses a snapshot log to track the rows that have been updated in the master table. Snapshot logs are used in updating the snapshots based on the master table.
What is Distributed database ?
A distributed database is a network of databases managed by multiple database servers that appears to a user as single logical database. The data of all databases in the distributed database can be simultaneously accessed and modified.
How can we reduce the network traffic?
- Replication of data in distributed environment.
- Using snapshots to replicate data.
- Using remote procedure calls.
Differentiate simple and complex, snapshots ?
- A simple snapshot is based on a query that does not contains GROUP BY clauses, CONNECT BY clauses, JOINs, sub-query or snashot of operations.
- A complex snapshots contain atleast any one of the above.
What are the Built-ins used for sending Parameters to forms?
You can pass parameter values to a form when an application executes the call_form, New_form, Open_form or Run_product.
Can you have more than one content canvas view attached with a window?
Yes. Each window you create must have atleast one content canvas view assigned to it. You can also create a window that has manipulated content canvas view. At run time only one of the content canvas views assign to a window is displayed at a time.
Is the After report trigger fired if the report execution fails?
Yes.
Does a Before form trigger fire when the parameter form is suppressed?
Yes.
Tempfiles, unlike normal datafiles, are not listed in v$datafile or dba_data_files. Instead query v$tempfile or dba_temp_files:
SELECT * FROM v$tempfile;
SELECT * FROM dba_temp_files;
How do I find used/free space in a TEMPORARY tablespace? (for DBA )
Unlike normal tablespaces, true temporary tablespace information is not listed in DBA_FREE_SPACE. Instead use the V$TEMP_SPACE_HEADER view:
SELECT tablespace_name, SUM (bytes used), SUM (bytes free)
FROM V$temp_space_header
GROUP BY tablespace_name;
What is a profile ?
Each database user is assigned a Profile that specifies limitations on various system resources available to the user.
How will you enforce security using stored procedures?
Don't grant user access directly to tables within the application. Instead grant the ability to access the procedures that access the tables. When procedure executed it will execute the privilege of procedures owner. Users cannot access tables except via the procedure.
How can one see who is using a temporary segment? (for DBA )
For every user using temporary space, there is an entry in SYS.V$_LOCK with type 'TS'.
All temporary segments are named 'ffff.bbbb' where 'ffff' is the file it is in and 'bbbb' is first block of the segment. If your temporary tablespace is set to TEMPORARY, all sorts are done in one large temporary segment. For usage stats, see SYS.V_$SORT_SEGMENT
From Oracle 8.0, one can just query SYS.v$sort_usage. Look at these examples:
select s.username, u."USER", u.tablespace, u.contents, u.extents, u.blocks
from sys.v_$session s, sys.v_$sort_usage u
where s.addr = u.session_addr
/
select s.osuser, s.process, s.username, s.serial#,
Sum (u.blocks)*vp.value/1024 sort_size
from sys.v_$session s, sys.v_$sort_usage u, sys.v_$parameter VP
where s.saddr = u.session_addr
and vp.name = 'db_block_size'
and s.osuser like '&1'
group by s.osuser, s.process, s.username, s.serial#, vp.value
/
How does one get the view definition of fixed views/tables?
Query v$fixed_view_definition. Example: SELECT * FROM v$fixed_view_definition WHERE view_name='V$SESSION';
What are the dictionary tables used to monitor a database spaces ?
DBA_FREE_SPACE
DBA_SEGMENTS
DBA_DATA_FILES.
How can we specify the Archived log file name format and destination?
By setting the following values in init.ora file. LOG_ARCHIVE_FORMAT = arch %S/s/T/tarc (%S - Log sequence number and is zero left paded, %s - Log sequence number not padded. %T - Thread number lef-zero-paded and %t - Thread number not padded). The file name created is arch 0001 are if %S is used. LOG_ARCHIVE_DEST = path.
What is user Account in Oracle database?
An user account is not a physical structure in Database but it is having important relationship to the objects in the database and will be having certain privileges.
When will the data in the snapshot log be used?
We must be able to create a after row trigger on table (i.e., it should be not be already available) After giving table privileges. We cannot specify snapshot log name because oracle uses the name of the master table in the name of the database objects that support its snapshot log. The master table name should be less than or equal to 23 characters. (The table name created will be MLOGS_tablename, and trigger name will be TLOGS name).
What dynamic data replication?
Updating or Inserting records in remote database through database triggers. It may fail if remote database is having any problem.
What is Two-Phase Commit ?
Two-phase commit is mechanism that guarantees a distributed transaction either commits on all involved nodes or rolls back on all involved nodes to maintain data consistency across the global distributed database. It has two phase, a Prepare Phase and a Commit Phase.
How can you Enforce Referential Integrity in snapshots ?
Time the references to occur when master tables are not in use. Peform the reference the manually immdiately locking the master tables. We can join tables in snopshots by creating a complex snapshots that will based on the master tables.
What is a SQL * NET?
SQL *NET is ORACLE's mechanism for interfacing with the communication protocols used by the networks that facilitate distributed processing and distributed databases. It is used in Clint-Server and Server-Server communications.
What is a SNAPSHOT ?
Snapshots are read-only copies of a master table located on a remote node which is periodically refreshed to reflect changes made to the master table.
What is the mechanism provided by ORACLE for table replication ?
Snapshots and SNAPSHOT LOGs
What is snapshots?
Snapshot is an object used to dynamically replicate data between distribute database at specified time intervals. In ver 7.0 they are read only.
What are the various type of snapshots?
Simple and Complex.
Describe two phases of Two-phase commit ?
Prepare phase - The global coordinator (initiating node) ask a participants to prepare (to promise to commit or rollback the transaction, even if there is a failure) Commit - Phase - If all participants respond to the coordinator that they are prepared, the coordinator asks all nodes to commit the transaction, if all participants cannot prepare, the coordinator asks all nodes to roll back the transaction.
What is snapshot log ?
It is a table that maintains a record of modifications to the master table in a snapshot. It is stored in the same database as master table and is only available for simple snapshots. It should be created before creating snapshots.
What are the benefits of distributed options in databases?
Database on other servers can be updated and those transactions can be grouped together with others in a logical unit.
Database uses a two phase commit.
What are the options available to refresh snapshots ?
COMPLETE - Tables are completely regenerated using the snapshots query and the master tables every time the snapshot referenced.
FAST - If simple snapshot used then a snapshot log can be used to send the changes to the snapshot tables.
FORCE - Default value. If possible it performs a FAST refresh; Otherwise it will perform a complete refresh.
What is a SNAPSHOT LOG ?
A snapshot log is a table in the master database that is associated with the master table. ORACLE uses a snapshot log to track the rows that have been updated in the master table. Snapshot logs are used in updating the snapshots based on the master table.
What is Distributed database ?
A distributed database is a network of databases managed by multiple database servers that appears to a user as single logical database. The data of all databases in the distributed database can be simultaneously accessed and modified.
How can we reduce the network traffic?
- Replication of data in distributed environment.
- Using snapshots to replicate data.
- Using remote procedure calls.
Differentiate simple and complex, snapshots ?
- A simple snapshot is based on a query that does not contains GROUP BY clauses, CONNECT BY clauses, JOINs, sub-query or snashot of operations.
- A complex snapshots contain atleast any one of the above.
What are the Built-ins used for sending Parameters to forms?
You can pass parameter values to a form when an application executes the call_form, New_form, Open_form or Run_product.
Can you have more than one content canvas view attached with a window?
Yes. Each window you create must have atleast one content canvas view assigned to it. You can also create a window that has manipulated content canvas view. At run time only one of the content canvas views assign to a window is displayed at a time.
Is the After report trigger fired if the report execution fails?
Yes.
Does a Before form trigger fire when the parameter form is suppressed?
Yes.
Oracle Interview Questions And Answers [4]
What is a deadlock ? Explain .
Two processes wating to update the rows of a table which are locked by the other process then deadlock arises. In a database environment this will often happen because of not issuing proper row lock commands. Poor design of front-end application may cause this situation and the performance of server will reduce drastically.
These locks will be released automatically when a commit/rollback operation performed or any one of this processes being killed externally.
What is a Schema ?
The set of objects owned by user account is called the schema.
What is a cluster Key ?
The related columns of the tables are called the cluster key. The cluster key is indexed using a cluster index and its value is stored only once for multiple tables in the cluster.
What is Parallel Server ?
Multiple instances accessing the same database (Only In Multi-CPU environments)
What are the basic element of Base configuration of an oracle Database ?
It consists of
one or more data files.
one or more control files.
two or more redo log files.
The Database contains
multiple users/schemas
one or more rollback segments
one or more tablespaces
Data dictionary tables
User objects (table,indexes,views etc.,)
The server that access the database consists of
SGA (Database buffer, Dictionary Cache Buffers, Redo log buffers, Shared SQL pool)
SMON (System MONito)
PMON (Process MONitor)
LGWR (LoG Write)
DBWR (Data Base Write)
ARCH (ARCHiver)
CKPT (Check Point)
RECO
Dispatcher
User Process with associated PGS
What is clusters ?
Group of tables physically stored together because they share common columns and are often used together is called Cluster.
What is an Index ? How it is implemented in Oracle Database ?
An index is a database structure used by the server to have direct access of a row in a table. An index is automatically created when a unique of primary key constraint clause is specified in create table comman (Ver 7.0)
What is a Database instance ? Explain
A database instance (Server) is a set of memory structure and background processes that access a set of database files.
The process can be shared by all users. The memory structure that are used to store most queried data from database. This helps up to improve database performance by decreasing the amount of I/O performed against data file.
What is the use of ANALYZE command ?
To perform one of these function on an index,table, or cluster:
- To collect statistics about object used by the optimizer and store them in the data dictionary.
- To delete statistics about the object used by object from the data dictionary.
- To validate the structure of the object.
- To identify migrated and chained rows of the table or cluster.
What is default tablespace ?
The Tablespace to contain schema objects created without specifying a tablespace name.
What are the system resources that can be controlled through Profile ?
The number of concurrent sessions the user can establish the CPU processing time available to the user's session the CPU processing time available to a single call to ORACLE made by a SQL statement the amount of logical I/O available to the user's session the amout of logical I/O available to a single call to ORACLE made by a SQL statement the allowed amount of idle time for the user's session the allowed amount of connect time for the user's session.
What is Tablespace Quota ?
The collective amount of disk space available to the objects in a schema on a particular tablespace.
What are the different Levels of Auditing ?
Statement Auditing, Privilege Auditing and Object Auditing.
What is Statement Auditing ?
Statement auditing is the auditing of the powerful system privileges without regard to specifically named objects.
What are the database administrators utilities available ?
SQL * DBA - This allows DBA to monitor and control an ORACLE database. SQL * Loader - It loads data from standard operating system files (Flat files) into ORACLE database tables. Export (EXP) and Import (imp) utilities allow you to move existing data in ORACLE format to and from ORACLE database.
How can you enable automatic archiving ?
Shut the database
Backup the database
Modify/Include LOG_ARCHIVE_START_TRUE in init.ora file.
Start up the database.
What are roles? How can we implement roles ?
Roles are the easiest way to grant and manage common privileges needed by different groups of database users. Creating roles and assigning provides to roles. Assign each role to group of users. This will simplify the job of assigning privileges to individual users.
What are Roles ?
Roles are named groups of related privileges that are granted to users or other roles.
What are the use of Roles ?
REDUCED GRANTING OF PRIVILEGES - Rather than explicitly granting the same set of privileges to many users a database administrator can grant the privileges for a group of related users granted to a role and then grant only the role to each member of the group.
DYNAMIC PRIVILEGE MANAGEMENT - When the privileges of a group must change, only the privileges of the role need to be modified. The security domains of all users granted the group's role automatically reflect the changes made to the role.
SELECTIVE AVAILABILITY OF PRIVILEGES - The roles granted to a user can be selectively enable (available for use) or disabled (not available for use). This allows specific control of a user's privileges in any given situation.
APPLICATION AWARENESS - A database application can be designed to automatically enable and disable selective roles when a user attempts to use the application.
What is Privilege Auditing ?
Privilege auditing is the auditing of the use of powerful system privileges without regard to specifically named objects.
What is Object Auditing ?
Object auditing is the auditing of accesses to specific schema objects without regard to user.
What is Auditing ?
Monitoring of user access to aid in the investigation of database use.
Two processes wating to update the rows of a table which are locked by the other process then deadlock arises. In a database environment this will often happen because of not issuing proper row lock commands. Poor design of front-end application may cause this situation and the performance of server will reduce drastically.
These locks will be released automatically when a commit/rollback operation performed or any one of this processes being killed externally.
What is a Schema ?
The set of objects owned by user account is called the schema.
What is a cluster Key ?
The related columns of the tables are called the cluster key. The cluster key is indexed using a cluster index and its value is stored only once for multiple tables in the cluster.
What is Parallel Server ?
Multiple instances accessing the same database (Only In Multi-CPU environments)
What are the basic element of Base configuration of an oracle Database ?
It consists of
one or more data files.
one or more control files.
two or more redo log files.
The Database contains
multiple users/schemas
one or more rollback segments
one or more tablespaces
Data dictionary tables
User objects (table,indexes,views etc.,)
The server that access the database consists of
SGA (Database buffer, Dictionary Cache Buffers, Redo log buffers, Shared SQL pool)
SMON (System MONito)
PMON (Process MONitor)
LGWR (LoG Write)
DBWR (Data Base Write)
ARCH (ARCHiver)
CKPT (Check Point)
RECO
Dispatcher
User Process with associated PGS
What is clusters ?
Group of tables physically stored together because they share common columns and are often used together is called Cluster.
What is an Index ? How it is implemented in Oracle Database ?
An index is a database structure used by the server to have direct access of a row in a table. An index is automatically created when a unique of primary key constraint clause is specified in create table comman (Ver 7.0)
What is a Database instance ? Explain
A database instance (Server) is a set of memory structure and background processes that access a set of database files.
The process can be shared by all users. The memory structure that are used to store most queried data from database. This helps up to improve database performance by decreasing the amount of I/O performed against data file.
What is the use of ANALYZE command ?
To perform one of these function on an index,table, or cluster:
- To collect statistics about object used by the optimizer and store them in the data dictionary.
- To delete statistics about the object used by object from the data dictionary.
- To validate the structure of the object.
- To identify migrated and chained rows of the table or cluster.
What is default tablespace ?
The Tablespace to contain schema objects created without specifying a tablespace name.
What are the system resources that can be controlled through Profile ?
The number of concurrent sessions the user can establish the CPU processing time available to the user's session the CPU processing time available to a single call to ORACLE made by a SQL statement the amount of logical I/O available to the user's session the amout of logical I/O available to a single call to ORACLE made by a SQL statement the allowed amount of idle time for the user's session the allowed amount of connect time for the user's session.
What is Tablespace Quota ?
The collective amount of disk space available to the objects in a schema on a particular tablespace.
What are the different Levels of Auditing ?
Statement Auditing, Privilege Auditing and Object Auditing.
What is Statement Auditing ?
Statement auditing is the auditing of the powerful system privileges without regard to specifically named objects.
What are the database administrators utilities available ?
SQL * DBA - This allows DBA to monitor and control an ORACLE database. SQL * Loader - It loads data from standard operating system files (Flat files) into ORACLE database tables. Export (EXP) and Import (imp) utilities allow you to move existing data in ORACLE format to and from ORACLE database.
How can you enable automatic archiving ?
Shut the database
Backup the database
Modify/Include LOG_ARCHIVE_START_TRUE in init.ora file.
Start up the database.
What are roles? How can we implement roles ?
Roles are the easiest way to grant and manage common privileges needed by different groups of database users. Creating roles and assigning provides to roles. Assign each role to group of users. This will simplify the job of assigning privileges to individual users.
What are Roles ?
Roles are named groups of related privileges that are granted to users or other roles.
What are the use of Roles ?
REDUCED GRANTING OF PRIVILEGES - Rather than explicitly granting the same set of privileges to many users a database administrator can grant the privileges for a group of related users granted to a role and then grant only the role to each member of the group.
DYNAMIC PRIVILEGE MANAGEMENT - When the privileges of a group must change, only the privileges of the role need to be modified. The security domains of all users granted the group's role automatically reflect the changes made to the role.
SELECTIVE AVAILABILITY OF PRIVILEGES - The roles granted to a user can be selectively enable (available for use) or disabled (not available for use). This allows specific control of a user's privileges in any given situation.
APPLICATION AWARENESS - A database application can be designed to automatically enable and disable selective roles when a user attempts to use the application.
What is Privilege Auditing ?
Privilege auditing is the auditing of the use of powerful system privileges without regard to specifically named objects.
What is Object Auditing ?
Object auditing is the auditing of accesses to specific schema objects without regard to user.
What is Auditing ?
Monitoring of user access to aid in the investigation of database use.
Oracle Interview Questions And Answers [3]
What is an Oracle sequence?
A sequence generates a serial list of unique numbers for numerical columns of a database's tables.
What is a synonym?
A synonym is an alias for a table, view, sequence or program unit.
What are the types of synonyms?
There are two types of synonyms private and public.
What is a private synonym?
Only its owner can access a private synonym.
What is a public synonym?
Any database user can access a public synonym.
What are synonyms used for?
- Mask the real name and owner of an object.
- Provide public access to an object
- Provide location transparency for tables, views or program units of a remote database.
- Simplify the SQL statements for database users.
What is an Oracle index?
An index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval. Index can be created on one or more columns of a table.
How are the index updates?
Indexes are automatically maintained and used by Oracle. Changes to table data are automatically incorporated into all relevant indexes.
What is a Tablespace?
A database is divided into Logical Storage Unit called tablespace. A tablespace is used to grouped related logical structures together
What is Rollback Segment ?
A Database contains one or more Rollback Segments to temporarily store "undo" information.
What are the Characteristics of Data Files ?
A data file can be associated with only one database. Once created a data file can't change size. One or more data files form a logical unit of database storage called a tablespace.
How to define Data Block size ?
A data block size is specified for each ORACLE database when the database is created. A database users and allocated free database space in ORACLE data blocks. Block size is specified in INIT.ORA file and can’t be changed latter.
What does a Control file Contain ?
A Control file records the physical structure of the database. It contains the following information.
Database Name
Names and locations of a database's files and redolog files.
Time stamp of database creation.
What is difference between UNIQUE constraint and PRIMARY KEY constraint ?
A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can't contain Nulls.
What is Index Cluster ?
A Cluster with an index on the Cluster Key
When does a Transaction end ?
When it is committed or Rollbacked.
What is the effect of setting the value "ALL_ROWS" for OPTIMIZER_GOAL parameter of the ALTER SESSION command ? What are the factors that affect OPTIMIZER in choosing an Optimization approach ?
Answer The OPTIMIZER_MODE initialization parameter Statistics in the Data Dictionary the OPTIMIZER_GOAL parameter of the ALTER SESSION command hints in the statement.
What is the effect of setting the value "CHOOSE" for OPTIMIZER_GOAL, parameter of the ALTER SESSION Command ?
The Optimizer chooses Cost_based approach and optimizes with the goal of best throughput if statistics for atleast one of the tables accessed by the SQL statement exist in the data dictionary. Otherwise the OPTIMIZER chooses RULE_based approach.
How does one create a new database? (for DBA)
One can create and modify Oracle databases using the Oracle "dbca" (Database Configuration Assistant) utility. The dbca utility is located in the $ORACLE_HOME/bin directory. The Oracle Universal Installer (oui) normally starts it after installing the database server software.
One can also create databases manually using scripts. This option, however, is falling out of fashion, as it is quite involved and error prone. Look at this example for creating and Oracle 9i database:
CONNECT SYS AS SYSDBA
ALTER SYSTEM SET DB_CREATE_FILE_DEST='/u01/oradata/';
ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_1='/u02/oradata/';
ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_2='/u03/oradata/';
CREATE DATABASE;
What database block size should I use? (for DBA)
Oracle recommends that your database block size match, or be multiples of your operating system block size. One can use smaller block sizes, but the performance cost is significant. Your choice should depend on the type of application you are running. If you have many small transactions as with OLTP, use a smaller block size. With fewer but larger transactions, as with a DSS application, use a larger block size. If you are using a volume manager, consider your "operating system block size" to be 8K. This is because volume manager products use 8K blocks (and this is not configurable).
What are the different approaches used by Optimizer in choosing an execution plan ?
Rule-based and Cost-based.
What does ROLLBACK do ?
ROLLBACK retracts any of the changes resulting from the SQL statements in the transaction.
How does one coalesce free space ? (for DBA)
SMON coalesces free space (extents) into larger, contiguous extents every 2 hours and even then, only for a short period of time.
SMON will not coalesce free space if a tablespace's default storage parameter "pctincrease" is set to 0. With Oracle 7.3 one can manually coalesce a tablespace using the ALTER TABLESPACE ... COALESCE; command, until then use:
SQL> alter session set events 'immediate trace name coalesce level n';
Where 'n' is the tablespace number you get from SELECT TS#, NAME FROM SYS.TS$;
You can get status information about this process by selecting from the SYS.DBA_FREE_SPACE_COALESCED dictionary view.
How does one prevent tablespace fragmentation? (for DBA)
Always set PCTINCREASE to 0 or 100.
Bizarre values for PCTINCREASE will contribute to fragmentation. For example if you set PCTINCREASE to 1 you will see that your extents are going to have weird and wacky sizes: 100K, 100K, 101K, 102K, etc. Such extents of bizarre size are rarely re-used in their entirety. PCTINCREASE of 0 or 100 gives you nice round extent sizes that can easily be reused. E.g.. 100K, 100K, 200K, 400K, etc.
Use the same extent size for all the segments in a given tablespace. Locally Managed tablespaces (available from 8i onwards) with uniform extent sizes virtually eliminates any tablespace fragmentation. Note that the number of extents per segment does not cause any performance issue anymore, unless they run into thousands and thousands where additional I/O may be required to fetch the additional blocks where extent maps of the segment are stored.
Where can one find the high water mark for a table? (for DBA)
There is no single system table, which contains the high water mark (HWM) for a table. A table's HWM can be calculated using the results from the following SQL statements:
SELECT BLOCKS
FROM DBA_SEGMENTS
WHERE OWNER=UPPER(owner) AND SEGMENT_NAME = UPPER(table);
ANALYZE TABLE owner.table ESTIMATE STATISTICS;
SELECT EMPTY_BLOCKS
FROM DBA_TABLES
WHERE OWNER=UPPER(owner) AND SEGMENT_NAME = UPPER(table);
Thus, the tables' HWM = (query result 1) - (query result 2) - 1
NOTE: You can also use the DBMS_SPACE package and calculate the HWM = TOTAL_BLOCKS - UNUSED_BLOCKS - 1.
What is COST-based approach to optimization ?
Considering available access paths and determining the most efficient execution plan based on statistics in the data dictionary for the tables accessed by the statement and their associated clusters and indexes.
What does COMMIT do ?
COMMIT makes permanent the changes resulting from all SQL statements in the transaction. The changes made by the SQL statements of a transaction become visible to other user sessions transactions that start only after transaction is committed.
How are extents allocated to a segment? (for DBA)
Oracle8 and above rounds off extents to a multiple of 5 blocks when more than 5 blocks are requested. If one requests 16K or 2 blocks (assuming a 8K block size), Oracle doesn't round it up to 5 blocks, but it allocates 2 blocks or 16K as requested. If one asks for 8 blocks, Oracle will round it up to 10 blocks.
Space allocation also depends upon the size of contiguous free space available. If one asks for 8 blocks and Oracle finds a contiguous free space that is exactly 8 blocks, it would give it you. If it were 9 blocks, Oracle would also give it to you. Clearly Oracle doesn't always round extents to a multiple of 5 blocks.
The exception to this rule is locally managed tablespaces. If a tablespace is created with local extent management and the extent size is 64K, then Oracle allocates 64K or 8 blocks assuming 8K-block size. Oracle doesn't round it up to the multiple of 5 when a tablespace is locally managed.
Can one rename a database user (schema)? (for DBA)
No, this is listed as Enhancement Request 158508. Workaround:
Do a user-level export of user A
create new user B
Import system/manager fromuser=A touser=B
Drop user A
A sequence generates a serial list of unique numbers for numerical columns of a database's tables.
What is a synonym?
A synonym is an alias for a table, view, sequence or program unit.
What are the types of synonyms?
There are two types of synonyms private and public.
What is a private synonym?
Only its owner can access a private synonym.
What is a public synonym?
Any database user can access a public synonym.
What are synonyms used for?
- Mask the real name and owner of an object.
- Provide public access to an object
- Provide location transparency for tables, views or program units of a remote database.
- Simplify the SQL statements for database users.
What is an Oracle index?
An index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval. Index can be created on one or more columns of a table.
How are the index updates?
Indexes are automatically maintained and used by Oracle. Changes to table data are automatically incorporated into all relevant indexes.
What is a Tablespace?
A database is divided into Logical Storage Unit called tablespace. A tablespace is used to grouped related logical structures together
What is Rollback Segment ?
A Database contains one or more Rollback Segments to temporarily store "undo" information.
What are the Characteristics of Data Files ?
A data file can be associated with only one database. Once created a data file can't change size. One or more data files form a logical unit of database storage called a tablespace.
How to define Data Block size ?
A data block size is specified for each ORACLE database when the database is created. A database users and allocated free database space in ORACLE data blocks. Block size is specified in INIT.ORA file and can’t be changed latter.
What does a Control file Contain ?
A Control file records the physical structure of the database. It contains the following information.
Database Name
Names and locations of a database's files and redolog files.
Time stamp of database creation.
What is difference between UNIQUE constraint and PRIMARY KEY constraint ?
A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can't contain Nulls.
What is Index Cluster ?
A Cluster with an index on the Cluster Key
When does a Transaction end ?
When it is committed or Rollbacked.
What is the effect of setting the value "ALL_ROWS" for OPTIMIZER_GOAL parameter of the ALTER SESSION command ? What are the factors that affect OPTIMIZER in choosing an Optimization approach ?
Answer The OPTIMIZER_MODE initialization parameter Statistics in the Data Dictionary the OPTIMIZER_GOAL parameter of the ALTER SESSION command hints in the statement.
What is the effect of setting the value "CHOOSE" for OPTIMIZER_GOAL, parameter of the ALTER SESSION Command ?
The Optimizer chooses Cost_based approach and optimizes with the goal of best throughput if statistics for atleast one of the tables accessed by the SQL statement exist in the data dictionary. Otherwise the OPTIMIZER chooses RULE_based approach.
How does one create a new database? (for DBA)
One can create and modify Oracle databases using the Oracle "dbca" (Database Configuration Assistant) utility. The dbca utility is located in the $ORACLE_HOME/bin directory. The Oracle Universal Installer (oui) normally starts it after installing the database server software.
One can also create databases manually using scripts. This option, however, is falling out of fashion, as it is quite involved and error prone. Look at this example for creating and Oracle 9i database:
CONNECT SYS AS SYSDBA
ALTER SYSTEM SET DB_CREATE_FILE_DEST='/u01/oradata/';
ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_1='/u02/oradata/';
ALTER SYSTEM SET DB_CREATE_ONLINE_LOG_DEST_2='/u03/oradata/';
CREATE DATABASE;
What database block size should I use? (for DBA)
Oracle recommends that your database block size match, or be multiples of your operating system block size. One can use smaller block sizes, but the performance cost is significant. Your choice should depend on the type of application you are running. If you have many small transactions as with OLTP, use a smaller block size. With fewer but larger transactions, as with a DSS application, use a larger block size. If you are using a volume manager, consider your "operating system block size" to be 8K. This is because volume manager products use 8K blocks (and this is not configurable).
What are the different approaches used by Optimizer in choosing an execution plan ?
Rule-based and Cost-based.
What does ROLLBACK do ?
ROLLBACK retracts any of the changes resulting from the SQL statements in the transaction.
How does one coalesce free space ? (for DBA)
SMON coalesces free space (extents) into larger, contiguous extents every 2 hours and even then, only for a short period of time.
SMON will not coalesce free space if a tablespace's default storage parameter "pctincrease" is set to 0. With Oracle 7.3 one can manually coalesce a tablespace using the ALTER TABLESPACE ... COALESCE; command, until then use:
SQL> alter session set events 'immediate trace name coalesce level n';
Where 'n' is the tablespace number you get from SELECT TS#, NAME FROM SYS.TS$;
You can get status information about this process by selecting from the SYS.DBA_FREE_SPACE_COALESCED dictionary view.
How does one prevent tablespace fragmentation? (for DBA)
Always set PCTINCREASE to 0 or 100.
Bizarre values for PCTINCREASE will contribute to fragmentation. For example if you set PCTINCREASE to 1 you will see that your extents are going to have weird and wacky sizes: 100K, 100K, 101K, 102K, etc. Such extents of bizarre size are rarely re-used in their entirety. PCTINCREASE of 0 or 100 gives you nice round extent sizes that can easily be reused. E.g.. 100K, 100K, 200K, 400K, etc.
Use the same extent size for all the segments in a given tablespace. Locally Managed tablespaces (available from 8i onwards) with uniform extent sizes virtually eliminates any tablespace fragmentation. Note that the number of extents per segment does not cause any performance issue anymore, unless they run into thousands and thousands where additional I/O may be required to fetch the additional blocks where extent maps of the segment are stored.
Where can one find the high water mark for a table? (for DBA)
There is no single system table, which contains the high water mark (HWM) for a table. A table's HWM can be calculated using the results from the following SQL statements:
SELECT BLOCKS
FROM DBA_SEGMENTS
WHERE OWNER=UPPER(owner) AND SEGMENT_NAME = UPPER(table);
ANALYZE TABLE owner.table ESTIMATE STATISTICS;
SELECT EMPTY_BLOCKS
FROM DBA_TABLES
WHERE OWNER=UPPER(owner) AND SEGMENT_NAME = UPPER(table);
Thus, the tables' HWM = (query result 1) - (query result 2) - 1
NOTE: You can also use the DBMS_SPACE package and calculate the HWM = TOTAL_BLOCKS - UNUSED_BLOCKS - 1.
What is COST-based approach to optimization ?
Considering available access paths and determining the most efficient execution plan based on statistics in the data dictionary for the tables accessed by the statement and their associated clusters and indexes.
What does COMMIT do ?
COMMIT makes permanent the changes resulting from all SQL statements in the transaction. The changes made by the SQL statements of a transaction become visible to other user sessions transactions that start only after transaction is committed.
How are extents allocated to a segment? (for DBA)
Oracle8 and above rounds off extents to a multiple of 5 blocks when more than 5 blocks are requested. If one requests 16K or 2 blocks (assuming a 8K block size), Oracle doesn't round it up to 5 blocks, but it allocates 2 blocks or 16K as requested. If one asks for 8 blocks, Oracle will round it up to 10 blocks.
Space allocation also depends upon the size of contiguous free space available. If one asks for 8 blocks and Oracle finds a contiguous free space that is exactly 8 blocks, it would give it you. If it were 9 blocks, Oracle would also give it to you. Clearly Oracle doesn't always round extents to a multiple of 5 blocks.
The exception to this rule is locally managed tablespaces. If a tablespace is created with local extent management and the extent size is 64K, then Oracle allocates 64K or 8 blocks assuming 8K-block size. Oracle doesn't round it up to the multiple of 5 when a tablespace is locally managed.
Can one rename a database user (schema)? (for DBA)
No, this is listed as Enhancement Request 158508. Workaround:
Do a user-level export of user A
create new user B
Import system/manager fromuser=A touser=B
Drop user A
Oracle Interview Questions And Answers [2]
What is a tablespace?
A database is divided into Logical Storage Unit called tablespaces. A tablespace is used to grouped related logical structures together.
What is SYSTEM tablespace and when is it created?
Every Oracle database contains a tablespace named SYSTEM, which is automatically created when the database is created. The SYSTEM tablespace always contains the data dictionary tables for the entire database.
Explain the relationship among database, tablespace and data file ?
Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace.
What is schema?
A schema is collection of database objects of a user.
What are Schema Objects?
Schema objects are the logical structures that directly refer to the database's data. Schema objects include tables, views, sequences, synonyms, indexes, clusters, database triggers, procedures, functions packages and database links.
Can objects of the same schema reside in different tablespaces?
Yes.
Can a tablespace hold objects from different schemes?
Yes.
What is Oracle table?
A table is the basic unit of data storage in an Oracle database. The tables of a database hold all of the user accessible data. Table data is stored in rows and columns.
What is an Oracle view?
A view is a virtual table. Every view has a query attached to it. (The query is a SELECT statement that identifies the columns and rows of the table(s) the view uses.)
What is Partial Backup ?
A Partial Backup is any operating system backup short of a full backup, taken while the database is open or shut down.
What is Mirrored on-line Redo Log ?
A mirrored on-line redo log consists of copies of on-line redo log files physically located on separate disks, changes made to one member of the group are made to all members
What is Full Backup ?
A full backup is an operating system backup of all data files, on-line redo log files and control file that constitute ORACLE database and the parameter.
Can a View based on another View ?
Yes.
Can a Tablespace hold objects from different Schemes ?
Yes.
Can objects of the same Schema reside in different tablespace ?
Yes.
What is the use of Control File ?
When an instance of an ORACLE database is started, its control file is used to identify the database and redo log files that must be opened for database operation to proceed. It is also used in database recovery.
Do View contain Data ?
Views do not contain or store data.
What are the Referential actions supported by FOREIGN KEY integrity constraint ?
UPDATE and DELETE Restrict - A referential integrity rule that disallows the update or deletion of referenced data. DELETE Cascade - When a referenced row is deleted all associated dependent rows are deleted.
What are the type of Synonyms?
There are two types of Synonyms Private and Public.
What is a Redo Log ?
The set of Redo Log files YSDATE,UID,USER or USERENV SQL functions, or the pseudo columns LEVEL or ROWNUM.
What is an Index Segment ?
Each Index has an Index segment that stores all of its data.
Explain the relationship among Database, Tablespace and Data file?
Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace
What are the different type of Segments ?
Data Segment, Index Segment, Rollback Segment and Temporary Segment.
What are Clusters ?
Clusters are groups of one or more tables physically stores together to share common columns and are often used together.
What is an Integrity Constrains ?
An integrity constraint is a declarative way to define a business rule for a column of a table.
What is an Index ?
An Index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval. Index can be created on one or more columns of a table.
What is an Extent ?
An Extent is a specific number of contiguous data blocks, obtained in a single allocation, and used to store a specific type of information.
What is a View ?
A view is a virtual table. Every view has a Query attached to it. (The Query is a SELECT statement that identifies the columns and rows of the table(s) the view uses.)
What is Table ?
A table is the basic unit of data storage in an ORACLE database. The tables of a database hold all of the user accessible data. Table data is stored in rows and columns.
A database is divided into Logical Storage Unit called tablespaces. A tablespace is used to grouped related logical structures together.
What is SYSTEM tablespace and when is it created?
Every Oracle database contains a tablespace named SYSTEM, which is automatically created when the database is created. The SYSTEM tablespace always contains the data dictionary tables for the entire database.
Explain the relationship among database, tablespace and data file ?
Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace.
What is schema?
A schema is collection of database objects of a user.
What are Schema Objects?
Schema objects are the logical structures that directly refer to the database's data. Schema objects include tables, views, sequences, synonyms, indexes, clusters, database triggers, procedures, functions packages and database links.
Can objects of the same schema reside in different tablespaces?
Yes.
Can a tablespace hold objects from different schemes?
Yes.
What is Oracle table?
A table is the basic unit of data storage in an Oracle database. The tables of a database hold all of the user accessible data. Table data is stored in rows and columns.
What is an Oracle view?
A view is a virtual table. Every view has a query attached to it. (The query is a SELECT statement that identifies the columns and rows of the table(s) the view uses.)
What is Partial Backup ?
A Partial Backup is any operating system backup short of a full backup, taken while the database is open or shut down.
What is Mirrored on-line Redo Log ?
A mirrored on-line redo log consists of copies of on-line redo log files physically located on separate disks, changes made to one member of the group are made to all members
What is Full Backup ?
A full backup is an operating system backup of all data files, on-line redo log files and control file that constitute ORACLE database and the parameter.
Can a View based on another View ?
Yes.
Can a Tablespace hold objects from different Schemes ?
Yes.
Can objects of the same Schema reside in different tablespace ?
Yes.
What is the use of Control File ?
When an instance of an ORACLE database is started, its control file is used to identify the database and redo log files that must be opened for database operation to proceed. It is also used in database recovery.
Do View contain Data ?
Views do not contain or store data.
What are the Referential actions supported by FOREIGN KEY integrity constraint ?
UPDATE and DELETE Restrict - A referential integrity rule that disallows the update or deletion of referenced data. DELETE Cascade - When a referenced row is deleted all associated dependent rows are deleted.
What are the type of Synonyms?
There are two types of Synonyms Private and Public.
What is a Redo Log ?
The set of Redo Log files YSDATE,UID,USER or USERENV SQL functions, or the pseudo columns LEVEL or ROWNUM.
What is an Index Segment ?
Each Index has an Index segment that stores all of its data.
Explain the relationship among Database, Tablespace and Data file?
Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace
What are the different type of Segments ?
Data Segment, Index Segment, Rollback Segment and Temporary Segment.
What are Clusters ?
Clusters are groups of one or more tables physically stores together to share common columns and are often used together.
What is an Integrity Constrains ?
An integrity constraint is a declarative way to define a business rule for a column of a table.
What is an Index ?
An Index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval. Index can be created on one or more columns of a table.
What is an Extent ?
An Extent is a specific number of contiguous data blocks, obtained in a single allocation, and used to store a specific type of information.
What is a View ?
A view is a virtual table. Every view has a Query attached to it. (The Query is a SELECT statement that identifies the columns and rows of the table(s) the view uses.)
What is Table ?
A table is the basic unit of data storage in an ORACLE database. The tables of a database hold all of the user accessible data. Table data is stored in rows and columns.
Oracle Interview Questions And Answers
What is Auditing ?
The database has the ability to audit all actions that take place within it.
a) Login attempts, b) Object Accesss, c) Database Action Result of Greatest(1,NULL) or Least(1,NULL) NULL
While designing in client/server what are the 2 imp. things to be considered ?
Network Overhead (traffic), Speed and Load of client server
When to create indexes ?
To be created when table is queried for less than 2% or 4% to 25% of the table rows.
How can you avoid indexes ?
TO make index access path unavailable - Use FULL hint to optimizer for full table scan - Use INDEX or AND-EQUAL hint to optimizer to use one index or set to indexes instead of another. - Use an expression in the Where Clause of the SQL.
What is the result of the following SQL :
Select 1 from dual
UNION
Select 'A' from dual;
Error
Can database trigger written on synonym of a table and if it can be then what would be the effect if original table is accessed.
Yes, database trigger would fire.
Can you alter synonym of view or view ?
No
Can you create index on view ?
No
What is the difference between a view and a synonym ?
Synonym is just a second name of table used for multiple link of database. View can be created with many tables, and with virtual columns and with conditions. But synonym can be on view.
What is the difference between alias and synonym ?
Alias is temporary and used with one query. Synonym is permanent and not used as alias.
What is the effect of synonym and table name used in same Select statement ?
Valid
What's the length of SQL integer ?
32 bit length
What is the difference between foreign key and reference key ?
Foreign key is the key i.e. attribute which refers to another table primary key. Reference key is the primary key of table referred by another table.
Can dual table be deleted, dropped or altered or updated or inserted ?
Yes
If content of dual is updated to some value computation takes place or not ?
Yes
If any other table same as dual is created would it act similar to dual?
Yes
For which relational operators in where clause, index is not used ?
<> , like '% ...' is NOT functions, field +constant, field || ''
Assume that there are multiple databases running on one machine. How can you switch from one to another ?
Changing the ORACLE_SID
What are the advantages of Oracle ?
Portability : Oracle is ported to more platforms than any of its competitors, running on more than 100 hardware platforms and 20 networking protocols.
Market Presence : Oracle is by far the largest RDBMS vendor and spends more on R & D than most of its competitors earn in total revenue. This market clout means that you are unlikely to be left in the lurch by Oracle and there are always lots of third party interfaces available.
Backup and Recovery : Oracle provides industrial strength support for on-line backup and recovery and good software fault tolerence to disk failure. You can also do point-in-time recovery.
Performance : Speed of a 'tuned' Oracle Database and application is quite good, even with large databases. Oracle can manage > 100GB databases.
Multiple database support : Oracle has a superior ability to manage multiple databases within the same transaction using a two-phase commit protocol.
What is a forward declaration ? What is its use ?
PL/SQL requires that you declare an identifier before using it. Therefore, you must declare a subprogram before calling it. This declaration at the start of a subprogram is called forward declaration. A forward declaration consists of a subprogram specification terminated by a semicolon.
What are actual and formal parameters ?
Actual Parameters : Subprograms pass information using parameters. The variables or expressions referenced in the parameter list of a subprogram call are actual parameters. For example, the following procedure call lists two actual parameters named emp_num and amount:
Eg. raise_salary(emp_num, amount);
Formal Parameters : The variables declared in a subprogram specification and referenced in the subprogram body are formal parameters. For example, the following procedure declares two formal parameters named emp_id and increase: Eg. PROCEDURE raise_salary (emp_id INTEGER, increase REAL) IS current_salary REAL;
What are the types of Notation ?
Position, Named, Mixed and Restrictions.
What all important parameters of the init.ora are supposed to be increased if you want to increase the SGA size ?
In our case, db_block_buffers was changed from 60 to 1000 (std values are 60, 550 & 3500) shared_pool_size was changed from 3.5MB to 9MB (std values are 3.5, 5 & 9MB) open_cursors was changed from 200 to 300 (std values are 200 & 300) db_block_size was changed from 2048 (2K) to 4096 (4K) {at the time of database creation}.
The initial SGA was around 4MB when the server RAM was 32MB and The new SGA was around 13MB when the server RAM was increased to 128MB.
If I have an execute privilege on a procedure in another users schema, can I execute his procedure even though I do not have privileges on the tables within the procedure ?
Yes
What are various types of joins ?
Equijoins, Non-equijoins, self join, outer join
What is a package cursor ?
A package cursor is a cursor which you declare in the package specification without an SQL statement. The SQL statement for the cursor is attached dynamically at runtime from calling procedures.
If you insert a row in a table, then create another table and then say Rollback. In this case will the row be inserted ?
Yes. Because Create table is a DDL which commits automatically as soon as it is executed. The DDL commits the transaction even if the create statement fails internally (eg table already exists error) and not syntactically.
What are the various types of queries ??
Normal Queries
Sub Queries
Co-related queries
Nested queries
Compound queries
What is a transaction ?
A transaction is a set of SQL statements between any two COMMIT and ROLLBACK statements.
What is implicit cursor and how is it used by Oracle ?
An implicit cursor is a cursor which is internally created by Oracle. It is created by Oracle for each individual SQL.
Which of the following is not a schema object : Indexes, tables, public synonyms, triggers and packages ?
Public synonyms
What is PL/SQL?
PL/SQL is Oracle's Procedural Language extension to SQL. The language includes object oriented programming techniques such as encapsulation, function overloading, information hiding (all but inheritance), and so, brings state-of-the-art programming to the Oracle database server and a variety of Oracle tools.
Is there a PL/SQL Engine in SQL*Plus?
No. Unlike Oracle Forms, SQL*Plus does not have a PL/SQL engine. Thus, all your PL/SQL are send directly to the database engine for execution. This makes it much more efficient as SQL statements are not stripped off and send to the database individually.
Is there a limit on the size of a PL/SQL block?
Currently, the maximum parsed/compiled size of a PL/SQL block is 64K and the maximum code size is 100K. You can run the following select statement to query the size of an existing package or procedure.
SQL> select * from dba_object_size where name = 'procedure_name'
Can one read/write files from PL/SQL?
Included in Oracle 7.3 is a UTL_FILE package that can read and write files. The directory you intend writing to has to be in your INIT.ORA file (see UTL_FILE_DIR=... parameter). Before Oracle 7.3 the only means of writing a file was to use DBMS_OUTPUT with the SQL*Plus SPOOL command.
DECLARE
fileHandler UTL_FILE.FILE_TYPE;
BEGIN
fileHandler := UTL_FILE.FOPEN('/home/oracle/tmp', 'myoutput','W');
UTL_FILE.PUTF(fileHandler, 'Value of func1 is %sn', func1(1));
UTL_FILE.FCLOSE(fileHandler);
END;
How can I protect my PL/SQL source code?
PL/SQL V2.2, available with Oracle7.2, implements a binary wrapper for PL/SQL programs to protect the source code. This is done via a standalone utility that transforms the PL/SQL source code into portable binary object code (somewhat larger than the original). This way you can distribute software without having to worry about exposing your proprietary algorithms and methods. SQL*Plus and SQL*DBA will still understand and know how to execute such scripts. Just be careful, there is no "decode" command available.
The syntax is:
wrap iname=myscript.sql oname=xxxx.yyy
Can one use dynamic SQL within PL/SQL? OR Can you use a DDL in a procedure ? How ?
From PL/SQL V2.1 one can use the DBMS_SQL package to execute dynamic SQL statements.
Eg: CREATE OR REPLACE PROCEDURE DYNSQL
AS
cur integer;
rc integer;
BEGIN
cur := DBMS_SQL.OPEN_CURSOR;
DBMS_SQL.PARSE(cur,'CREATE TABLE X (Y DATE)', DBMS_SQL.NATIVE);
rc := DBMS_SQL.EXECUTE(cur);
DBMS_SQL.CLOSE_CURSOR(cur);
END;
The database has the ability to audit all actions that take place within it.
a) Login attempts, b) Object Accesss, c) Database Action Result of Greatest(1,NULL) or Least(1,NULL) NULL
While designing in client/server what are the 2 imp. things to be considered ?
Network Overhead (traffic), Speed and Load of client server
When to create indexes ?
To be created when table is queried for less than 2% or 4% to 25% of the table rows.
How can you avoid indexes ?
TO make index access path unavailable - Use FULL hint to optimizer for full table scan - Use INDEX or AND-EQUAL hint to optimizer to use one index or set to indexes instead of another. - Use an expression in the Where Clause of the SQL.
What is the result of the following SQL :
Select 1 from dual
UNION
Select 'A' from dual;
Error
Can database trigger written on synonym of a table and if it can be then what would be the effect if original table is accessed.
Yes, database trigger would fire.
Can you alter synonym of view or view ?
No
Can you create index on view ?
No
What is the difference between a view and a synonym ?
Synonym is just a second name of table used for multiple link of database. View can be created with many tables, and with virtual columns and with conditions. But synonym can be on view.
What is the difference between alias and synonym ?
Alias is temporary and used with one query. Synonym is permanent and not used as alias.
What is the effect of synonym and table name used in same Select statement ?
Valid
What's the length of SQL integer ?
32 bit length
What is the difference between foreign key and reference key ?
Foreign key is the key i.e. attribute which refers to another table primary key. Reference key is the primary key of table referred by another table.
Can dual table be deleted, dropped or altered or updated or inserted ?
Yes
If content of dual is updated to some value computation takes place or not ?
Yes
If any other table same as dual is created would it act similar to dual?
Yes
For which relational operators in where clause, index is not used ?
<> , like '% ...' is NOT functions, field +constant, field || ''
Assume that there are multiple databases running on one machine. How can you switch from one to another ?
Changing the ORACLE_SID
What are the advantages of Oracle ?
Portability : Oracle is ported to more platforms than any of its competitors, running on more than 100 hardware platforms and 20 networking protocols.
Market Presence : Oracle is by far the largest RDBMS vendor and spends more on R & D than most of its competitors earn in total revenue. This market clout means that you are unlikely to be left in the lurch by Oracle and there are always lots of third party interfaces available.
Backup and Recovery : Oracle provides industrial strength support for on-line backup and recovery and good software fault tolerence to disk failure. You can also do point-in-time recovery.
Performance : Speed of a 'tuned' Oracle Database and application is quite good, even with large databases. Oracle can manage > 100GB databases.
Multiple database support : Oracle has a superior ability to manage multiple databases within the same transaction using a two-phase commit protocol.
What is a forward declaration ? What is its use ?
PL/SQL requires that you declare an identifier before using it. Therefore, you must declare a subprogram before calling it. This declaration at the start of a subprogram is called forward declaration. A forward declaration consists of a subprogram specification terminated by a semicolon.
What are actual and formal parameters ?
Actual Parameters : Subprograms pass information using parameters. The variables or expressions referenced in the parameter list of a subprogram call are actual parameters. For example, the following procedure call lists two actual parameters named emp_num and amount:
Eg. raise_salary(emp_num, amount);
Formal Parameters : The variables declared in a subprogram specification and referenced in the subprogram body are formal parameters. For example, the following procedure declares two formal parameters named emp_id and increase: Eg. PROCEDURE raise_salary (emp_id INTEGER, increase REAL) IS current_salary REAL;
What are the types of Notation ?
Position, Named, Mixed and Restrictions.
What all important parameters of the init.ora are supposed to be increased if you want to increase the SGA size ?
In our case, db_block_buffers was changed from 60 to 1000 (std values are 60, 550 & 3500) shared_pool_size was changed from 3.5MB to 9MB (std values are 3.5, 5 & 9MB) open_cursors was changed from 200 to 300 (std values are 200 & 300) db_block_size was changed from 2048 (2K) to 4096 (4K) {at the time of database creation}.
The initial SGA was around 4MB when the server RAM was 32MB and The new SGA was around 13MB when the server RAM was increased to 128MB.
If I have an execute privilege on a procedure in another users schema, can I execute his procedure even though I do not have privileges on the tables within the procedure ?
Yes
What are various types of joins ?
Equijoins, Non-equijoins, self join, outer join
What is a package cursor ?
A package cursor is a cursor which you declare in the package specification without an SQL statement. The SQL statement for the cursor is attached dynamically at runtime from calling procedures.
If you insert a row in a table, then create another table and then say Rollback. In this case will the row be inserted ?
Yes. Because Create table is a DDL which commits automatically as soon as it is executed. The DDL commits the transaction even if the create statement fails internally (eg table already exists error) and not syntactically.
What are the various types of queries ??
Normal Queries
Sub Queries
Co-related queries
Nested queries
Compound queries
What is a transaction ?
A transaction is a set of SQL statements between any two COMMIT and ROLLBACK statements.
What is implicit cursor and how is it used by Oracle ?
An implicit cursor is a cursor which is internally created by Oracle. It is created by Oracle for each individual SQL.
Which of the following is not a schema object : Indexes, tables, public synonyms, triggers and packages ?
Public synonyms
What is PL/SQL?
PL/SQL is Oracle's Procedural Language extension to SQL. The language includes object oriented programming techniques such as encapsulation, function overloading, information hiding (all but inheritance), and so, brings state-of-the-art programming to the Oracle database server and a variety of Oracle tools.
Is there a PL/SQL Engine in SQL*Plus?
No. Unlike Oracle Forms, SQL*Plus does not have a PL/SQL engine. Thus, all your PL/SQL are send directly to the database engine for execution. This makes it much more efficient as SQL statements are not stripped off and send to the database individually.
Is there a limit on the size of a PL/SQL block?
Currently, the maximum parsed/compiled size of a PL/SQL block is 64K and the maximum code size is 100K. You can run the following select statement to query the size of an existing package or procedure.
SQL> select * from dba_object_size where name = 'procedure_name'
Can one read/write files from PL/SQL?
Included in Oracle 7.3 is a UTL_FILE package that can read and write files. The directory you intend writing to has to be in your INIT.ORA file (see UTL_FILE_DIR=... parameter). Before Oracle 7.3 the only means of writing a file was to use DBMS_OUTPUT with the SQL*Plus SPOOL command.
DECLARE
fileHandler UTL_FILE.FILE_TYPE;
BEGIN
fileHandler := UTL_FILE.FOPEN('/home/oracle/tmp', 'myoutput','W');
UTL_FILE.PUTF(fileHandler, 'Value of func1 is %sn', func1(1));
UTL_FILE.FCLOSE(fileHandler);
END;
How can I protect my PL/SQL source code?
PL/SQL V2.2, available with Oracle7.2, implements a binary wrapper for PL/SQL programs to protect the source code. This is done via a standalone utility that transforms the PL/SQL source code into portable binary object code (somewhat larger than the original). This way you can distribute software without having to worry about exposing your proprietary algorithms and methods. SQL*Plus and SQL*DBA will still understand and know how to execute such scripts. Just be careful, there is no "decode" command available.
The syntax is:
wrap iname=myscript.sql oname=xxxx.yyy
Can one use dynamic SQL within PL/SQL? OR Can you use a DDL in a procedure ? How ?
From PL/SQL V2.1 one can use the DBMS_SQL package to execute dynamic SQL statements.
Eg: CREATE OR REPLACE PROCEDURE DYNSQL
AS
cur integer;
rc integer;
BEGIN
cur := DBMS_SQL.OPEN_CURSOR;
DBMS_SQL.PARSE(cur,'CREATE TABLE X (Y DATE)', DBMS_SQL.NATIVE);
rc := DBMS_SQL.EXECUTE(cur);
DBMS_SQL.CLOSE_CURSOR(cur);
END;
Core programming Questions-4
1) Design the implementation and thread models for I/O completion ports. Remember to take into account multi-processor machines.
2) Write a function that takes in a string parameter and checks to see whether or not it is an integer, and if it is then return the integer value.
3) Write a function to print all of the permutations of a string.
4) Implement malloc.
5) Write a function to print the Fibonacci numbers.
6) Write a function to copy two strings, A and B. The last few bytes of string A overlap the first few bytes of string B.
7) How would you write qsort?
8) How would you print out the data in a binary tree, level by level, starting at the top?
2) Write a function that takes in a string parameter and checks to see whether or not it is an integer, and if it is then return the integer value.
3) Write a function to print all of the permutations of a string.
4) Implement malloc.
5) Write a function to print the Fibonacci numbers.
6) Write a function to copy two strings, A and B. The last few bytes of string A overlap the first few bytes of string B.
7) How would you write qsort?
8) How would you print out the data in a binary tree, level by level, starting at the top?
Core programming Questions-3
1) Multiple by 8 without using multiplication or addition. Now do the same with 7.
2) Write routines to read and write a bounded buffer.
3) Write routines to manage a heap using an existing array.
4) Implement an algorithm to take an array and return one with only unique elements in it.
5) Implement an algorithm that takes two strings as input, and returns the intersection of the two, with each letter represented at most once. Now speed it up. 6) Implement an algorithm to print out all files below a given root node.
7) How would you find a cycle in a linked list?
8) Give me an algorithm to shuffle a deck of cards, given that the cards are stored in an array of ints.
2) Write routines to read and write a bounded buffer.
3) Write routines to manage a heap using an existing array.
4) Implement an algorithm to take an array and return one with only unique elements in it.
5) Implement an algorithm that takes two strings as input, and returns the intersection of the two, with each letter represented at most once. Now speed it up. 6) Implement an algorithm to print out all files below a given root node.
7) How would you find a cycle in a linked list?
8) Give me an algorithm to shuffle a deck of cards, given that the cards are stored in an array of ints.
Core programming Questions-2
) Reverse a string. Optimize for speed. Optimize for space.
2) Reverse the words in a sentence, i.e. "I am Christina" becomes "Christina am I" Optimize for speed. Optimize for space.
3) Find a substring. Optimize for speed. Optimize for space.
4) Compare two strings using O(n) time with constant space.
5) Suppose you have an array of 1001 integers. The integers are in random order, but you know each of the integers is between 1 and 1000 (inclusive). In addition, each number appears only once in the array, except for one number, which occurs twice. Assume that you can access each element of the array only once. Describe an algorithm to find the repeated number. If you used auxiliary storage in your algorithm, can you find an algorithm that does not require it?
6) Count the number of set bits in a number. Now optimize for speed. Now optimize for size.
2) Reverse the words in a sentence, i.e. "I am Christina" becomes "Christina am I" Optimize for speed. Optimize for space.
3) Find a substring. Optimize for speed. Optimize for space.
4) Compare two strings using O(n) time with constant space.
5) Suppose you have an array of 1001 integers. The integers are in random order, but you know each of the integers is between 1 and 1000 (inclusive). In addition, each number appears only once in the array, except for one number, which occurs twice. Assume that you can access each element of the array only once. Describe an algorithm to find the repeated number. If you used auxiliary storage in your algorithm, can you find an algorithm that does not require it?
6) Count the number of set bits in a number. Now optimize for speed. Now optimize for size.
Core programming Questions-1
These questions are generally asked in positions where hard core programming skills are required.
The fact to remember is that a language ( C++, C#, Java etc ) and its syntax can be learnt rapidly but good programming skills and understanding and ability to create alogrithms is a base requirement.
This is why interviews for programming / coding positions in companies like Microsoft, Google, IBM etc are not language or technology based but demands core skills.
Here are some questions which were asked in these companies in recent times ( from input of hundreds of candidates attending these interviews) :
What's the difference between a linked list and an array?
Implement a linked list. Why did you pick the method you did?
Implement an algorithm to sort a linked list. Why did you pick the method you did?
Describe advantages and disadvantages of the various stock sorting algorithms.
Implement an algorithm to reverse a linked list. Now do it without recursion.
Implement an algorithm to insert a node into a circular linked list without traversing it.
Implement an algorithm to sort an array. Why did you pick the method you did?
Implement an algorithm to do wild card string matching.
Implement strstr()
The fact to remember is that a language ( C++, C#, Java etc ) and its syntax can be learnt rapidly but good programming skills and understanding and ability to create alogrithms is a base requirement.
This is why interviews for programming / coding positions in companies like Microsoft, Google, IBM etc are not language or technology based but demands core skills.
Here are some questions which were asked in these companies in recent times ( from input of hundreds of candidates attending these interviews) :
What's the difference between a linked list and an array?
Implement a linked list. Why did you pick the method you did?
Implement an algorithm to sort a linked list. Why did you pick the method you did?
Describe advantages and disadvantages of the various stock sorting algorithms.
Implement an algorithm to reverse a linked list. Now do it without recursion.
Implement an algorithm to insert a node into a circular linked list without traversing it.
Implement an algorithm to sort an array. Why did you pick the method you did?
Implement an algorithm to do wild card string matching.
Implement strstr()
ASP.NET Problem & Solution
Topics
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Static Class Factory - Alice is seeing Bob's data - 3 new
---------------------------------------------------------
Thanks for the replys - I've read the article Patrice recommended. I understand that using static objects can have issues with shared values e.g. static class TempStore { int myValue; static TempStore() {} static Int GetValue() { return myValue; } static SetValue(int inpVal) - Thurs, Oct 11 2007 5:29 am 3 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/16b93baf97fd3ec8?hl=en
Cookies - 1 new
Using windwos authentication I cant see how it would end up in a cookie. Maybe you have some sort of spyware - Thurs, Oct 11 2007 5:31 am 1 message, 1
author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/77c6861e17e9ac51?hl=en
PLEASE ASSIST MY CHURCH PALNTING PROJECT. - 1 new
Dear Beloved Brethren, Calvary greetings to you all in the name of Our Lord Jesus Christ. I am Pastor Isaac Orits Edah, 36 years old from Lagos Nigeria,married to Evangelist Faith Abosede, We are bless presently with Two son's Isaac and Elijah, Isaac is 6 years and 6 month and Elijah is 2 years and 7 - Thurs, Oct 11 2007 5:48 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/be5965bcbc54c03f?hl=en
AdRotator Problem - 1 new
Steven, Thanks for the info, I have solved it using a slightly different approach. My goal was to implement a customcotrol and I have now done this using a composite control which contains two child controls a SqlDataSource and the AdRotator. This now works well. However I have a new Problem which I have posted as a new thread. In the Building - Thurs, Oct 11 2007 6:05 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/04127c1ef9e57206?hl=en
GridView AutoGenerateColumns not working - 2 new
Answering my own post for the benefit of others. The default value of AutoGenerateColumns property of gridview is true as it shows up in the proprtywindow, but my suggestion is : Don't count on it. I manually added the AutoGenerateColumns attribute in the asp:GridView element on the html page andits is now showing all the returned - Thurs, Oct 11 2007 6:09 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/217264816bbdc2d3?hl=en
Ranking ? - 4 new
Hi, I need to create a ranking column wich will be the row number... it is theseller wich most sells... Ranking Seller Sum 1 Paul 2.212,00 2 Robert 1.500,003 .... .... I have already the sql, but I dont know how to do the ranking number column... Can you help me? - Thurs, Oct 11 2007 6:06 am 4 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/c866a3881837a7ef?hl=en
RTF Documents and Session - 1 new
Oh shock of all shocks, i carried on trying to work out what was the problem and it seems that it was a Telerik control that was breaking things. - Thurs, Oct 11 2007 6:21 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/09a4f197e344c874?hl=en
get text of pdf through syncfusion component - 1 new
Go to the Aspose website: [link] 2) Download and install the evaluation version for .NET: [link] 3) Read the documentation: [link] - Thurs, Oct 11 2007 6:29 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cff931eb3757b4ed?hl=en
using OnLoad to search a database - 4 new
...anyone? - Thurs, Oct 11 2007 6:40 am 4 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/8253f62a489d7f29?hl=en
Load MFC DLL from C# web service... - 2 new
Hello, I'm having problems loading my MFC exported function from my C# Web service. I'm using the DllImport to load the dll and declare the function likethe following: [DllImport("MyDLL.dll")] public extern static int MyFunction();and in the MFC dll it is exported like the following: __declspec(dllexport) int MyFunction(); - Thurs, Oct 11 2007 7:50 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/92c4c44e3943d4ff?hl=en
dropdownlist onchange squiggly - 5 new
hey all, can someone please tell me why the onchange has a squiggly and if there is a better way to access the client-side change event for the drop-down list? The message is saying it's not a valid attribute of the drop down list - Thurs, Oct 11 2007 7:49 am 5 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/4e85cf7379caaf59?hl=en
PDF in asp.net - 2 new-
I asked a question about PDF/Word document generation recently, and one of theresponses I got was to use: [link] Specifically: [link] Downloaded the trial, absolutely loved it, company purchased it, and we've never looked back. Not affiliated in anyway, just a very satisfied customer/user. - Thurs, Oct 11 2007 7:47 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/d626135d93e226a6?hl=en
How to design a drill-down grid ? - 2 new
Third party component, create your own or Google there are few free ones. I will take you a while or some effort to learn how to use them however. - Thurs, Oct 11 2007 7:59 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/098514af4086fd65?hl=en
CSS styles and images not applied on login page - 2 new
Hello R.A.M., ...Make sure you set a allow all rule for the directory with images and stylesheets in your web.config file. Otherwise the url for the image is redirected to the login page as well. - Thurs, Oct 11 2007 8:11 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/1a3158fb7449b0ba?hl=en
Controls v HTML - 2 new
The advantages of controls like DataGrid and the like is that it's simply faster/easier to get data from your back end onto your front end. The advantages of controls like repeaters and the like is that you can get that 'ideal' separation of presentation on the front (.aspx) end with logic on the back end (.vb/cs files) - Thurs, Oct 11 2007 8:17 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5b7e595e1519f0a2?hl=en
Looking for simple nested gridview example - 1 new
I think it's a wash. We've been playing a bit with nested gridviews in 2.0.It's a lot of work. Probably as much work as writing your own HTML. For long term maintenance and transfer of knowledge, I supppose well commented nested gridviews would have the edge. -Darrel - Thurs, Oct 11 2007 8:18 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b7fdcdb96084d166?hl=en
WSE910 error + timeToleranceInSeconds setting not affecting anythi - 1 new
Hi everyone! I have the above error wse910 with my web service when the client's pc is 3 minutes or so out of sync! (If I set that pc to a smaller value, it DOES work!!!) Actually it's this one: WSE910: An error happened during the processing of a response message, and you can find the error in theinner exception. You can also find the - Thurs, Oct 11 2007 8:21 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/a73ec45ab2eee09a?hl=en
Directory Browsing for one directory only - 1 new
as browsing is implemented by IIS you need to create vdir that supports browsing in IIS. the next release of IIS will allow more configuration file support. -- bruce (sqlwork.com) - Thurs, Oct 11 2007 8:22 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/6a5f3a62f1067c32?hl=en
Change SelectCommand - 1 new
I have a SqlDatasource SelectCommand string that I want to use a multi-table view when in read-only (ItemTemplate) mode and a single table when in edit (EditItemTemplate) mode. Is Page_Load the best place to do this or do I need todo it prior to Page_Load? Thanks. David - Thurs, Oct 11 2007 8:30 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cad0e55a44bc6f21?hl=en
finding an element on a page - 6 new
hey all, i know theres GetElementByID but is there a way to find an element byseeing if just part of the id contains a certain string value? thanks, rodchar- Thurs, Oct 11 2007 8:39 am 6 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/c3cfd8f4617614cf?hl=en
UpdateBatchSize and Objectdatasource - 1 new
not really. while you could try to cache the updates and batch them, you get no notification of completion (last call to update). you could cache the updates, and have the form code call a "commit" to write the actual sql. -- bruce (sqlwork.com) rote wrote: - Thurs, Oct 11 2007 8:44 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/d71a12053a57dc4c?hl=en
what event do i use? - 1 new
hey all, i have a gridview on my web page. when i click to select a row and then click edit to go into edit mode, as soon as i'm in edit mode i need to run a javascript function. what's the best way to attach my function? thanks, rodchar - Thurs, Oct 11 2007 8:53 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cf7dea556a2088cb?hl=en
File Path not relative to dll? - 1 new
Patrice, Thanks. I'll take a look at the objects and methods. I appreciate thehelp. Rob *** Sent via Developersdex [link] *** - Thurs, Oct 11 2007 8:50 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/655df9809a403340?hl=en
Login control fails in published site - .net 3.5 - 3 new
I'm having problems with the login control when I publish my site. Everything works fine when I run the application from Visual Studio and when I browse directly to the site where it is being developed. The problem comes when I publish the site to another location on the same computer. The login - Thurs, Oct 11 2007 8:57 am 3 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5f29193ee664a5d4?hl=en
ASP.Net 1.1-- calling Javascript from within a method? - 4 new
Hi everyone, We have a javascript function we'd like to call from within a C# method in our code-behind file. The way it has worked historically is we'd call the method from a hyperlink, like this: click here ...what I'd like to do now is somehow call "MyMethod" from the code-behind - Thurs, Oct 11 2007 8:59 am 4 messages , 4 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b9956fbcc1c8f8e2?hl=en
FileUpload Control question - 9 new
Hi All, I am using the FileUpload control for the ASPX page. How do you disable the text box portion of that control, so I can force the user only to pick up a file via the Browser button, and not to type any file name that doesnot exists. Thanks, Joe - Thurs, Oct 11 2007 9:07 am 9 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/a85991fc99026e3c?hl=en
Data Layer, Business logic layer help - 1 new
I set up one of my other classes to test this out Steven. I created the updatequery in the datatable using the designer, added the update method to the business class, created a new web page, added a GridView and an object data source set to my business class, put a break point on the line that - Thurs, Oct 11 2007 9:13 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/0553d500d88f87ef?hl=en
Execute ASP using a template - 1 new
Hi all, I have a pretty specific question here: My requirement is to have users allowed to view templates and use them for emailing. I need to be able to dynamically generate content from these templates. The content will vary incomplexity, from a simple single text field to complex loops of information. -Thurs, Oct 11 2007 9:24 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/8ede5f933b262d72?hl=en
Asp:DropDown - get selected item - 5 new
Hi! I have an .aspx with some controls that are created dynamically. The itemsare populated into the box by setting the DataSource-property to a list. In addition I specify the text and value with DataTextField and DataValueField; this works as expected. However, my problems arises when I want to read the selected value - Thurs, Oct 11 2007 9:25 am 5 messages , 4 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/37b9ca5b67ff6ef0?hl=en
FormView - 1 new
Hello, I have a GridView and a FormView. I am getting that RecordID (Guid) of the row that I click in a GridView event. On that same event I make the FormView visible. What is the FormView property that I should make the value =RecordIID so I can load the data for that specific record? Thanks, Miguel - Thurs, Oct 11 2007 9:56 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b55f7329d78482d0?hl=en
FormView - How to define the RecordID? - 1 new
Hello, I have a GridView and a FormView. I am getting that RecordID (Guid) of the row that I click in a GridView event. On that same event I make the FormView visible. What is the FormView property that I should make the value =RecordIID so I can load the data for that specific record? Thanks, Miguel - Thurs, Oct 11 2007 9:57 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/3d0955316ad333ac?hl=en
My page is not triggering the RaisePostBackEvent() method - 3 new
In my *.aspx.vb file, I override the RaisePostBackEvent() method so that I canrun code during any postback. I know that a postback is occurring because IsPostBack() returns True, but none of the code in the following is executed: Protected Overrides Sub RaisePostBackEvent(ByVal sourceControl As - Thurs, Oct11 2007 10:07 am 3 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b250f1f1ff6cd67b?hl=en
How to: Response Redirct to the Friendly URLs - 2 new
I have set up an HttpModule that creates friendly urls and utilizes RewritePath. Such a url looks like /articles/The-Article-Title-Go es-Here.aspx. I onlu recently added the httpmodule so many of the search engines still havelinks that point to urls with querystrings - /articles/displayarticle.aspx? ArticleID=10 for example. - Thurs, Oct 11 2007 10:49 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/9f936c25d1fd2496?hl=en
Method Name Suggestion: Validate a Poor Choice? - 9 new
Please forgive the cross-post to multiple forums. I did it intentionally, but I *think* it was appropriate given the nature of my question. I'm working on an open source code library to help automate and clean up parameter validationcode. It's almost ready to go into open beta. But one last little glitch is holding me up, and that would be the - Thurs, Oct 11 2007 10:59 am 9 messages , 5 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cde31e419dd922c2?hl=en
Show XML data - 2 new
All, I'm using the following code in a blank page: public void Page_Load(object sender, EventArgs e) { ... XmlDocument xdoc = new XmlDocument(); xdoc.LoadXml(receipt.getIndivi dualReceipt(a, b)); } How can I show the XML data that is in xdoc without saving the file locally (which I'm not sure is even possible) and opening it? - Thurs, Oct 11 2007 12:20 pm 2 messages , 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/f1697a240ba44ef6?hl=en
Session - 1 new
I'd say Session.Abandon - AND redirect them to a "LoggedOut.aspx" special pagewhere you can test that the Session is actually gone. -- Peter Recursion: see Recursion site: [link] unBlog: [link] BlogMetaFinder: [link] - Thurs, Oct 11 2007 12:34 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/8f29753e36f5756e?hl=en
Basic Ajax Help - 1 new
What about adding this to the end of your code: UpdatePanel1.update(); This will refresh the update panel from outside of the updatepanel to reflect the changes in the list. Bjorn - Thurs, Oct 11 2007 12:37 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/e9d66511d0fd326a?hl=en
DataGrid - Dataset - 10 new
Protected Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArgs) [connection object creation] Dim sSQL As String = "SELECT * FROM tPlayers" Dim myAdapter As OleDbDataAdapter = New OleDbDataAdapter(sSQL,myConnec tion) Dim MyDataSet As New DataSet myAdapter.Fill(MyDataSet) - Thurs, Oct 11 2007 12:40 pm 10 messages , 5 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5d9b6341111ca90a?hl=en
-------
Static Class Factory - Alice is seeing Bob's data - 3 new
---------------------------------------------------------
Thanks for the replys - I've read the article Patrice recommended. I understand that using static objects can have issues with shared values e.g. static class TempStore { int myValue; static TempStore() {} static Int GetValue() { return myValue; } static SetValue(int inpVal) - Thurs, Oct 11 2007 5:29 am 3 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/16b93baf97fd3ec8?hl=en
Cookies - 1 new
Using windwos authentication I cant see how it would end up in a cookie. Maybe you have some sort of spyware - Thurs, Oct 11 2007 5:31 am 1 message, 1
author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/77c6861e17e9ac51?hl=en
PLEASE ASSIST MY CHURCH PALNTING PROJECT. - 1 new
Dear Beloved Brethren, Calvary greetings to you all in the name of Our Lord Jesus Christ. I am Pastor Isaac Orits Edah, 36 years old from Lagos Nigeria,married to Evangelist Faith Abosede, We are bless presently with Two son's Isaac and Elijah, Isaac is 6 years and 6 month and Elijah is 2 years and 7 - Thurs, Oct 11 2007 5:48 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/be5965bcbc54c03f?hl=en
AdRotator Problem - 1 new
Steven, Thanks for the info, I have solved it using a slightly different approach. My goal was to implement a customcotrol and I have now done this using a composite control which contains two child controls a SqlDataSource and the AdRotator. This now works well. However I have a new Problem which I have posted as a new thread. In the Building - Thurs, Oct 11 2007 6:05 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/04127c1ef9e57206?hl=en
GridView AutoGenerateColumns not working - 2 new
Answering my own post for the benefit of others. The default value of AutoGenerateColumns property of gridview is true as it shows up in the proprtywindow, but my suggestion is : Don't count on it. I manually added the AutoGenerateColumns attribute in the asp:GridView element on the html page andits is now showing all the returned - Thurs, Oct 11 2007 6:09 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/217264816bbdc2d3?hl=en
Ranking ? - 4 new
Hi, I need to create a ranking column wich will be the row number... it is theseller wich most sells... Ranking Seller Sum 1 Paul 2.212,00 2 Robert 1.500,003 .... .... I have already the sql, but I dont know how to do the ranking number column... Can you help me? - Thurs, Oct 11 2007 6:06 am 4 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/c866a3881837a7ef?hl=en
RTF Documents and Session - 1 new
Oh shock of all shocks, i carried on trying to work out what was the problem and it seems that it was a Telerik control that was breaking things. - Thurs, Oct 11 2007 6:21 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/09a4f197e344c874?hl=en
get text of pdf through syncfusion component - 1 new
Go to the Aspose website: [link] 2) Download and install the evaluation version for .NET: [link] 3) Read the documentation: [link] - Thurs, Oct 11 2007 6:29 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cff931eb3757b4ed?hl=en
using OnLoad to search a database - 4 new
...anyone? - Thurs, Oct 11 2007 6:40 am 4 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/8253f62a489d7f29?hl=en
Load MFC DLL from C# web service... - 2 new
Hello, I'm having problems loading my MFC exported function from my C# Web service. I'm using the DllImport to load the dll and declare the function likethe following: [DllImport("MyDLL.dll")] public extern static int MyFunction();and in the MFC dll it is exported like the following: __declspec(dllexport) int MyFunction(); - Thurs, Oct 11 2007 7:50 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/92c4c44e3943d4ff?hl=en
dropdownlist onchange squiggly - 5 new
hey all,
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/4e85cf7379caaf59?hl=en
PDF in asp.net - 2 new-
I asked a question about PDF/Word document generation recently, and one of theresponses I got was to use: [link] Specifically: [link] Downloaded the trial, absolutely loved it, company purchased it, and we've never looked back. Not affiliated in anyway, just a very satisfied customer/user. - Thurs, Oct 11 2007 7:47 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/d626135d93e226a6?hl=en
How to design a drill-down grid ? - 2 new
Third party component, create your own or Google there are few free ones. I will take you a while or some effort to learn how to use them however. - Thurs, Oct 11 2007 7:59 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/098514af4086fd65?hl=en
CSS styles and images not applied on login page - 2 new
Hello R.A.M., ...Make sure you set a allow all rule for the directory with images and stylesheets in your web.config file. Otherwise the url for the image is redirected to the login page as well. - Thurs, Oct 11 2007 8:11 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/1a3158fb7449b0ba?hl=en
Controls v HTML - 2 new
The advantages of controls like DataGrid and the like is that it's simply faster/easier to get data from your back end onto your front end. The advantages of controls like repeaters and the like is that you can get that 'ideal' separation of presentation on the front (.aspx) end with logic on the back end (.vb/cs files) - Thurs, Oct 11 2007 8:17 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5b7e595e1519f0a2?hl=en
Looking for simple nested gridview example - 1 new
I think it's a wash. We've been playing a bit with nested gridviews in 2.0.It's a lot of work. Probably as much work as writing your own HTML. For long term maintenance and transfer of knowledge, I supppose well commented nested gridviews would have the edge. -Darrel - Thurs, Oct 11 2007 8:18 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b7fdcdb96084d166?hl=en
WSE910 error + timeToleranceInSeconds setting not affecting anythi - 1 new
Hi everyone! I have the above error wse910 with my web service when the client's pc is 3 minutes or so out of sync! (If I set that pc to a smaller value, it DOES work!!!) Actually it's this one: WSE910: An error happened during the processing of a response message, and you can find the error in theinner exception. You can also find the - Thurs, Oct 11 2007 8:21 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/a73ec45ab2eee09a?hl=en
Directory Browsing for one directory only - 1 new
as browsing is implemented by IIS you need to create vdir that supports browsing in IIS. the next release of IIS will allow more configuration file support. -- bruce (sqlwork.com) - Thurs, Oct 11 2007 8:22 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/6a5f3a62f1067c32?hl=en
Change SelectCommand - 1 new
I have a SqlDatasource SelectCommand string that I want to use a multi-table view when in read-only (ItemTemplate) mode and a single table when in edit (EditItemTemplate) mode. Is Page_Load the best place to do this or do I need todo it prior to Page_Load? Thanks. David - Thurs, Oct 11 2007 8:30 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cad0e55a44bc6f21?hl=en
finding an element on a page - 6 new
hey all, i know theres GetElementByID but is there a way to find an element byseeing if just part of the id contains a certain string value? thanks, rodchar- Thurs, Oct 11 2007 8:39 am 6 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/c3cfd8f4617614cf?hl=en
UpdateBatchSize and Objectdatasource - 1 new
not really. while you could try to cache the updates and batch them, you get no notification of completion (last call to update). you could cache the updates, and have the form code call a "commit" to write the actual sql. -- bruce (sqlwork.com) rote wrote: - Thurs, Oct 11 2007 8:44 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/d71a12053a57dc4c?hl=en
what event do i use? - 1 new
hey all, i have a gridview on my web page. when i click to select a row and then click edit to go into edit mode, as soon as i'm in edit mode i need to run a javascript function. what's the best way to attach my function? thanks, rodchar - Thurs, Oct 11 2007 8:53 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cf7dea556a2088cb?hl=en
File Path not relative to dll? - 1 new
Patrice, Thanks. I'll take a look at the objects and methods. I appreciate thehelp. Rob *** Sent via Developersdex [link] *** - Thurs, Oct 11 2007 8:50 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/655df9809a403340?hl=en
Login control fails in published site - .net 3.5 - 3 new
I'm having problems with the login control when I publish my site. Everything works fine when I run the application from Visual Studio and when I browse directly to the site where it is being developed. The problem comes when I publish the site to another location on the same computer. The login - Thurs, Oct 11 2007 8:57 am 3 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5f29193ee664a5d4?hl=en
ASP.Net 1.1-- calling Javascript from within a method? - 4 new
Hi everyone, We have a javascript function we'd like to call from within a C# method in our code-behind file. The way it has worked historically is we'd call the method from a hyperlink, like this: click here ...what I'd like to do now is somehow call "MyMethod" from the code-behind - Thurs, Oct 11 2007 8:59 am 4 messages , 4 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b9956fbcc1c8f8e2?hl=en
FileUpload Control question - 9 new
Hi All, I am using the FileUpload control for the ASPX page. How do you disable the text box portion of that control, so I can force the user only to pick up a file via the Browser button, and not to type any file name that doesnot exists. Thanks, Joe - Thurs, Oct 11 2007 9:07 am 9 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/a85991fc99026e3c?hl=en
Data Layer, Business logic layer help - 1 new
I set up one of my other classes to test this out Steven. I created the updatequery in the datatable using the designer, added the update method to the business class, created a new web page, added a GridView and an object data source set to my business class, put a break point on the line that - Thurs, Oct 11 2007 9:13 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/0553d500d88f87ef?hl=en
Execute ASP using a template - 1 new
Hi all, I have a pretty specific question here: My requirement is to have users allowed to view templates and use them for emailing. I need to be able to dynamically generate content from these templates. The content will vary incomplexity, from a simple single text field to complex loops of information. -Thurs, Oct 11 2007 9:24 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/8ede5f933b262d72?hl=en
Asp:DropDown - get selected item - 5 new
Hi! I have an .aspx with some controls that are created dynamically. The itemsare populated into the box by setting the DataSource-property to a list. In addition I specify the text and value with DataTextField and DataValueField; this works as expected. However, my problems arises when I want to read the selected value - Thurs, Oct 11 2007 9:25 am 5 messages , 4 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/37b9ca5b67ff6ef0?hl=en
FormView - 1 new
Hello, I have a GridView and a FormView. I am getting that RecordID (Guid) of the row that I click in a GridView event. On that same event I make the FormView visible. What is the FormView property that I should make the value =RecordIID so I can load the data for that specific record? Thanks, Miguel - Thurs, Oct 11 2007 9:56 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b55f7329d78482d0?hl=en
FormView - How to define the RecordID? - 1 new
Hello, I have a GridView and a FormView. I am getting that RecordID (Guid) of the row that I click in a GridView event. On that same event I make the FormView visible. What is the FormView property that I should make the value =RecordIID so I can load the data for that specific record? Thanks, Miguel - Thurs, Oct 11 2007 9:57 am 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/3d0955316ad333ac?hl=en
My page is not triggering the RaisePostBackEvent() method - 3 new
In my *.aspx.vb file, I override the RaisePostBackEvent() method so that I canrun code during any postback. I know that a postback is occurring because IsPostBack() returns True, but none of the code in the following is executed: Protected Overrides Sub RaisePostBackEvent(ByVal sourceControl As - Thurs, Oct11 2007 10:07 am 3 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b250f1f1ff6cd67b?hl=en
How to: Response Redirct to the Friendly URLs - 2 new
I have set up an HttpModule that creates friendly urls and utilizes RewritePath. Such a url looks like /articles/The-Article-Title-Go es-Here.aspx. I onlu recently added the httpmodule so many of the search engines still havelinks that point to urls with querystrings - /articles/displayarticle.aspx? ArticleID=10 for example. - Thurs, Oct 11 2007 10:49 am 2 messages , 2 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/9f936c25d1fd2496?hl=en
Method Name Suggestion: Validate a Poor Choice? - 9 new
Please forgive the cross-post to multiple forums. I did it intentionally, but I *think* it was appropriate given the nature of my question. I'm working on an open source code library to help automate and clean up parameter validationcode. It's almost ready to go into open beta. But one last little glitch is holding me up, and that would be the - Thurs, Oct 11 2007 10:59 am 9 messages , 5 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cde31e419dd922c2?hl=en
Show XML data - 2 new
All, I'm using the following code in a blank page: public void Page_Load(object sender, EventArgs e) { ... XmlDocument xdoc = new XmlDocument(); xdoc.LoadXml(receipt.getIndivi dualReceipt(a, b)); } How can I show the XML data that is in xdoc without saving the file locally (which I'm not sure is even possible) and opening it? - Thurs, Oct 11 2007 12:20 pm 2 messages , 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/f1697a240ba44ef6?hl=en
Session - 1 new
I'd say Session.Abandon - AND redirect them to a "LoggedOut.aspx" special pagewhere you can test that the Session is actually gone. -- Peter Recursion: see Recursion site: [link] unBlog: [link] BlogMetaFinder: [link] - Thurs, Oct 11 2007 12:34 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/8f29753e36f5756e?hl=en
Basic Ajax Help - 1 new
What about adding this to the end of your code: UpdatePanel1.update(); This will refresh the update panel from outside of the updatepanel to reflect the changes in the list. Bjorn - Thurs, Oct 11 2007 12:37 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/e9d66511d0fd326a?hl=en
DataGrid - Dataset - 10 new
Protected Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArgs) [connection object creation] Dim sSQL As String = "SELECT * FROM tPlayers" Dim myAdapter As OleDbDataAdapter = New OleDbDataAdapter(sSQL,myConnec tion) Dim MyDataSet As New DataSet myAdapter.Fill(MyDataSet) - Thurs, Oct 11 2007 12:40 pm 10 messages , 5 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5d9b6341111ca90a?hl=en
ASP.NET Topic
Tool Tip in GridView - 2 new----------------------------
I have a gridView. I want When I use mouse over on any of the row or cell it should show me the text of that cell. so, I need Tool tip. But I don't know how to do that. - Tues, Oct 9 2007 2:45 pm 2 messages , 2
authorshttp://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5663f71427b9008d?hl=en
VS 2008 - 3 new---------------
I took my virus scanner out and it helped. I have 1GB RAM and it is a fairly new PC. No assemblies. It just seems quite slow doing simple things and sometimes while it is trying to do something my hard drive doesn't even flash but the page is pretty slow to load initially. My projects are on the network and I have - Tues, Oct 9 2007 2:56 pm 3 messages , 3 authors
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/cd7db1cd75c15abe?hl=en
Weird isn't it ? - 1 new------------------------
Hi Piotr, Piotr Nowak schrieb: ...that sounds really strange. Maybe install FileMon from [link] and see whether you can find any more information from there? Roland - Tues, Oct 9 2007 4:12 pm 1 message, 1 authorhttp://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/c428457badb3d573?hl=en
Web Controls issue - 1 new--------------------------
OK figured this out. - Tues, Oct 9 2007 4:39 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/c7acb88de652d7ce?hl=en
Detecting timeout with multiple websites on the same IIS server - 2 new-----------------------------------------------------------------------
I'm using the well documented code to detect whether a timeout has occurred when a page is fetched in the OnInit() event handler: If Session.IsNewSession Then Dim CookieHeader As String = Request.Headers("Cookie") If Not CookieHeader Is Nothing AndAlso CookieHeader.IndexOf("ASP.NET_ SessionId") >= 0 Then - Tues, Oct 9 2007 4:55 pm 2 messages , 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/91d5f86cf61d5d0f?hl=en
Operator Overloading - 1 new----------------------------
Yes, you can create overloaded method parameters in both VB.NET and C#. VB.NETeven makes it a little easier with optional parameters. - Tues, Oct 9 2007 4:51 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/2c3630f853a2e162?hl=en
form View - 1 new-----------------
Hi, I have a form view and in itemtemplate in form view I have a link that when I click on that flink my formview should be invisible. How can I do that.Thanks - Tues, Oct 9 2007 5:44 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/19cbc95b31962cbd?hl=en
AutoCompleteExtender - 1 new----------------------------
Hello, I am using an AutoCompleteExtender. I created the .asmx file with the method GetWordList:
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/726e8760fd696c83?hl=en
Delete List elements - 1 new----------------------------
Hello, I have a Generic.List(Of String) with 100 elements. I want to sort it and delete the last 40 elements. Can this be done without a loop? And if not, can I convert it to an array and do it in the array? Thanks, Miguel - Tues, Oct 9 2007 6:25 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/ce32963e1e831104?hl=en
What comes after FormsAuthentication.SignOut()? - 1 new-------------------------------------------------------
Bruce, that is my problem the token is resurrected. How do I make sure it is completely dead and no chance to resurrection??? Thank you, - Tues, Oct 9 20076:38 pm 1 message, 1 author
http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/3ffb5533ad56baae?hl=en
BackColor binding does not work on postback - 1 new---------------------------------------------------
You're welcome! Sincerely, Steven Cheng Microsoft MSDN Online Support Lead This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- ... http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/b6669a22070d0d5b?hl=en Posting to Form in Subdirectory - 1 new---------------------------------------Hi all. I have experience with C#/VB.NET and ASP Classic, but am very new to ASP.NET. I'm using ASP.NET 2.0 and am modifying a site. I copied the site files to a subdirectory to test and (hopefully) not interfere with the live version. I am running a page in the subdirectory that should submit to itself:- Tues, Oct 9 2007 7:24 pm 1 message, 1 author http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/4958701b20d38596?hl=en possible to authentificate in both mode together: windows and forms? - 2 new---------------------------------------------------------------------------- there is no built-in support for this. the easiest is two vdirs with the same code. otherwise, setup the vdir with windows authentication and anonymous access in iis and set forms authentication in web.config. in the login page, check the incoming ipaddress to see if its an intranet address. if it is, check for a windows identity. if none, then return a 401 - Tues, Oct 9 2007 8:03 pm 2 messages , 2 authors http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/d97036aef39f7e68?hl=en Web Parts Instances - 1 new--------------------------- Thanks for your followup JJ, For the cookie, I'm sure it is necessary for personalization. Without cookie, how does the site know whether this is you orany other guys who visit this site again(especially for anonymous users). And for ControlID and GetHashCode, as mentioned in previous messages, they - Tues,Oct 9 2007 8:24 pm 1 message, 1 author http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/445d17fa867a6bef?hl=en Webrequest permission is denied - 1 new---------------------------------------We have pro hosting on networksolutions for an ecommerce site. We are trying to connect to authorize.net via webrequest. It seems that NetworkSolutions hasmedium trust level and overriding is not allowed. ( I have tried to change trust level and add the url in the webrequest in web.config but nothing works)- Tues, Oct 9 2007 10:36 pm 1 message, 1 author http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/5f890f87b7c8d1a9?hl=en Load from database...clicking on title! - 1 new-----------------------------------------------Hi! I'd like to insert a new ajax.net idea inside my homepage. I'd like to realize this, and i hope you can help me. (i'm italian, excuse me for my english!!) In my homepage, i load last 15 messages from my forum (via mysql database). These messages are loaded with title and body and show with an ajax.net accordion - Tues, Oct 9 2007 10:54 pm 1 message, 1 author http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/9f24f0104a50722d?hl=en Retrieving values from dynamically added controls - 1 new--------------------------------------------------------- Create dynamic control each time (Postback or First time) in Page Init event to load values for control from viewstate or let you use viewstate.Then store all these controls into a object array. Now In case of postback in Button Click event, you can loop through controls object array you made while creating these controls. Where - Tues, Oct 9 2007 11:54 pm 1 message, 1 authorhttp://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/t/988bd08e6a97a3ac?hl=en
Visual Studio 2008 vs Visual Studio 2005
Review -1
----------
VS 2005 is, overall, pretty good on my machine. There are a couple of things
I have found that interfere:
1. Amount of memory on machine
2. Precompilation complete (on assemblies)? - If you are not constantly
adding additional patches/software, you can run a command line to complete
all of the ngening that normally runs in the background. Once complete,
things speed up.
3. Virus scanners - some really dog Visual Studio
Thus far, 2008 seems to have some of the same problems, so if you have one
of the above, you will likely find it slow, as well.
Review -2
--------------
It just seems quite slow doing simple things and sometimes while it is
trying to do something my hard drive doesn't even flash but the page is
pretty slow to load initially. My projects are on the network and I have
1GB network connection. It would seem that things should be faster.
Review -3
--------------------------
Yes, the VS2005 designer was thrown away and replaced with a fast new one
that includes split screen (design & HTML view both visible & editable at
once).
----------
VS 2005 is, overall, pretty good on my machine. There are a couple of things
I have found that interfere:
1. Amount of memory on machine
2. Precompilation complete (on assemblies)? - If you are not constantly
adding additional patches/software, you can run a command line to complete
all of the ngening that normally runs in the background. Once complete,
things speed up.
3. Virus scanners - some really dog Visual Studio
Thus far, 2008 seems to have some of the same problems, so if you have one
of the above, you will likely find it slow, as well.
Review -2
--------------
It just seems quite slow doing simple things and sometimes while it is
trying to do something my hard drive doesn't even flash but the page is
pretty slow to load initially. My projects are on the network and I have
1GB network connection. It would seem that things should be faster.
Review -3
--------------------------
Yes, the VS2005 designer was thrown away and replaced with a fast new one
that includes split screen (design & HTML view both visible & editable at
once).
Interview Questions : Networks and Security
How do you use RSA for both authentication and secrecy?
How do you do authentication with message digest(MD5)?
How does traceroute work?
Difference between discretionary access control and mandatory access control?
What is ARP and how does it work?
Explain Kerberos Protocol ?
Name some routing protocols? (RIP,OSPF etc..)
What are digital signatures and smart cards?
What is the connection between socket and session?
What is the role of Single Sign On in authentication technologies?
What are all the technical steps involved when the data transmission from server via router?
How hash function works in router?
Different between broadcast domain and collision domain.?
What does CIA stand for in security management?
What is classful and classless routing ?
Difference between RIPv1 & RIPv2 ?
What is multicasting ?
Basis for OSPF protocol?
What is meant by port blocking within LAN ?
What is difference between ARP & RARP ?
What do you understand by 'even circuit' in networking?
Difference between routing protocol and routed protocol?
How to retrieve administrator password without using any third party tools?
what are the different encryption types and tools available?
Is it possible to connect two private networks through Internet using VPN concentrator?
what is the difference between router ACLs and Firewall ACLs?
How do you do authentication with message digest(MD5)?
How does traceroute work?
Difference between discretionary access control and mandatory access control?
What is ARP and how does it work?
Explain Kerberos Protocol ?
Name some routing protocols? (RIP,OSPF etc..)
What are digital signatures and smart cards?
What is the connection between socket and session?
What is the role of Single Sign On in authentication technologies?
What are all the technical steps involved when the data transmission from server via router?
How hash function works in router?
Different between broadcast domain and collision domain.?
What does CIA stand for in security management?
What is classful and classless routing ?
Difference between RIPv1 & RIPv2 ?
What is multicasting ?
Basis for OSPF protocol?
What is meant by port blocking within LAN ?
What is difference between ARP & RARP ?
What do you understand by 'even circuit' in networking?
Difference between routing protocol and routed protocol?
How to retrieve administrator password without using any third party tools?
what are the different encryption types and tools available?
Is it possible to connect two private networks through Internet using VPN concentrator?
what is the difference between router ACLs and Firewall ACLs?
Interview Question : SAP R/3 Sales & Distribution
SAP R/3 Sales & Distribution
what is availability check, how to configuration of it?
What is Bonus Buy and how would I process?
what are tickets/issues in sap SD? who handles these things and give a brief description of the sam
what is the control parameter in setting item category
what is the difference between free goods & bonus buy?How do you configure bonus buy?
how to configure partial deliveries?
can you able to delete the company code data in customer master data?
how system determines shipping point for a line item in the sales order?
implementation interview questions of sap sales and distribution modules
what controls the schedule linewhat is the movement type of delivery?
what are tickets available in implementation project in sd module.
what is the difference between rebate and discount?
what is solution manager?what is purpose of it?2.in support what type of tool we can use?
what is the diffrence between static and dinamic in credit management?
What is the difference between free goods and bonus buy?
what is the difference between transit time and transportation time?
What is the difference between sales process and business process?
What do you mean by tickets? Could you plz give me some examples of tickets?
What is meant by Explosion in SD?
What is EDI invoices, how it reflects in SAP R3 system?
How do you change unit of measures in mmr?
What is difference between configuration and customization?
What is the difference between the access sequence of Rebate process and a pricing condition?
What is Common Distribution Channel and Common Division?
What are the settings to be made after PGI for an account to be debited/credited ?
Explain by an example the tax structure of any company?
Give an example of gap analysis with solution with regard to SAP SD?
What are the settings to be made for issue goods issue from sales order stock?
What happens if two plants maintain the same material used in intercompany at different standard co
What is SLA?
what is availability check, how to configuration of it?
What is Bonus Buy and how would I process?
what are tickets/issues in sap SD? who handles these things and give a brief description of the sam
what is the control parameter in setting item category
what is the difference between free goods & bonus buy?How do you configure bonus buy?
how to configure partial deliveries?
can you able to delete the company code data in customer master data?
how system determines shipping point for a line item in the sales order?
implementation interview questions of sap sales and distribution modules
what controls the schedule linewhat is the movement type of delivery?
what are tickets available in implementation project in sd module.
what is the difference between rebate and discount?
what is solution manager?what is purpose of it?2.in support what type of tool we can use?
what is the diffrence between static and dinamic in credit management?
What is the difference between free goods and bonus buy?
what is the difference between transit time and transportation time?
What is the difference between sales process and business process?
What do you mean by tickets? Could you plz give me some examples of tickets?
What is meant by Explosion in SD?
What is EDI invoices, how it reflects in SAP R3 system?
How do you change unit of measures in mmr?
What is difference between configuration and customization?
What is the difference between the access sequence of Rebate process and a pricing condition?
What is Common Distribution Channel and Common Division?
What are the settings to be made after PGI for an account to be debited/credited ?
Explain by an example the tax structure of any company?
Give an example of gap analysis with solution with regard to SAP SD?
What are the settings to be made for issue goods issue from sales order stock?
What happens if two plants maintain the same material used in intercompany at different standard co
What is SLA?
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