Oracle 1Z0-025 : Backup and Recovery

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Oracle Backup and Recovery Sample Questions:

1. What is the correct procedure for multiplexing control files?

A) Shut down the database, edit the CONTROL_FILES parameter, issue the ALTER DATABASE MULTIPLEX CONTROLFILE command, and start up the database.
B) Shut down the database, rename the control file, edit the CONTROL_FILES parameter, and start up the database.
C) Shut down the database, edit the CONTROL_FILES parameter, copy the control file, and start up the database.
D) Shut down the database, copy the control file to trace, edit the MULTIPLEX_CONTROL_FILES parameter, and start up the database.

2. How can a DBA disable one of the current archive destinations?

A) Shut down the database and delete the archive destination dictionary at the operating system level.
B) Issue the command ALTER SESSION SET LOG_ARCHIVE_DEST=DEFER.
C) It is not possible to disable archive destinations?
D) Specify the initialization parameter LOG_ARCHIVE_DEST_STATE_n=DEFER.

3. What is the function of ARCn in instance recovery?

A) It writes data to the archive log files.
B) The archive process does not take part in instance recovery.
C) It writes data to the online redo log files.
D) It frees resources held by user processes.
E) It writes dirty buffers from the buffer cache to the data files.
F) It synchronizes data file header and control files.

4. The instance crashed after the current online redo-log becomes corrupt. Which action can the DBA take to open the database?

A) Perform a complete recovery of the database.
B) Perform a tablespace recovery.
C) Recover the SYSTEM tablespace.
D) Perform a time-based recovery that stops at the time that the current online redo-log became corrupt.
E) Skip recovery and open the database with the RESETLOGS option.

5. After rebuilding the recovery catalog by resynchronizing it with a copy of the backup control file, you notice references to files that no longer exist. Which CREATE command clause should you use to remove these references?

A) CATALOG REMOVE
B) REMOVE
C) DELETE
D) UNCATALOG

Solutions: