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Oracle database 10g:Administration I Sample Questions:

1. Which three descriptions are correct about the effects of the TRUNCATE command on a table? (Choose three.)

A) Very little or no undo data is generated during the execution of the TRUNCATE command.
B) The corresponding indexes for the table are also truncated.
C) The high-water mark (HWM) is set to point to the first useable data block in the table segment.
D) Delete triggers on the table are fired during the execution of the TRUNCATE command.
E) The child table is truncated when the TRUNCATE command is applied on the parent table.

2. View the Exhibit to see the source and target databases.
You have created a database link, devdb.us.oracle.com, between the databases PRODDB and DEVDB. You want to import schema objects of the HR user using Oracle Data Pump from the development database, DEVDB, to the production database, PRODDB. You execute the following command on the target database server:
$impdp system/manager directory = DB_DATA dumpfile = schemas.dat schemas = hr flashback_time = 2004-02-03 09:00
The command fails, displaying the following error:
ORA-39001: invalid argument value ORA-39000: bad dump file specification ORA-31640: unable to open dump file "/home/oracle/schema/schemas.dat" for read ORA-27037: unable to obtain file status
What would you do to overcome the error?

A) remove the flashback_time option in the command
B) add network_link = devdb.us.oracle.com option in the command
C) remove the dumpfile option and add the network_link = devdb.us.oracle.com option in the command
D) remove the dumpfile option in the command
E) add the user, SYSTEM, to the schemas option in the command
F) remove the schemas option and add the network_link = devdb.us.oracle.com option in the command

3. Which two statements about Flashback Query are true? (Choose two.)

A) It fails when undo data pertaining to the transaction is overwritten.
B) It is generated by using the redo log files.
C) It helps in row-level recovery from user errors.
D) It can be performed to recover ALTER TABLE statements
E) The database has to be opened with the resetlogs option after performing Flashback Query.

4. You have a large amount of historical data in an operating system file. Some analysts in your organization need to query this data. The file is too large to load into your current database. Which is the most effective method to accomplish the task?

A) Upgrade the hardware/memory to accommodate the data.
B) Give analysts DBA privilege, so that they can query DBA_EXTERNAL_TABLES.
C) Load the data into your database by using the PARALLEL clause.
D) Use an external table so you can have the metadata available in your database, but leave the data in the operating system files.

5. You find that the database performance degrades while you backup the PROD database using Recovery Manager (RMAN). The PROD database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation?

A) Increase the total System Global Area (SGA) size to increase memory hits.
B) Configure Large Pool to be used by RMAN and shared server.
C) Increase Shared Pool size to cache more PL/SQL objects.
D) Increase Database Buffer Cache size to increase cache hits.
E) Configure Streams Pool to enable parallel processing.
F) Configure Java Pool to cache the java objects.

Solutions: