單項(xiàng)選擇題

You used the IMMEDIATE option to shut down your database instance. Consider the steps that may occurwhen a database instance is started and database is opened：
1. SGA is allocated.
2. Control file is read.
3. Redo log files are opened.4. Instance recovery is started.
5. Background processes are started.
6. Data file headers are checked for consistency.
7. Server parameter file or the initialization parameter file is read.
Which option has the correct order in which these steps occur（）

A.7， 1， 5， 2， 3， 6， 4
B.1， 5， 7， 2， 3， 6； step 4 is not required
C.7， 1， 5， 2， 3， 6； step 4 is not requiredThis document was downloaded from =>> http：//www.amaderforum.com
D.1， 2， 3， 5， 6， 4； step 7 is not required

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單項(xiàng)選擇題

Your database instance is configured with automatic undo management and the UNDO_RETENTIONparameter is set to 900 seconds. You executed the following command to enable retention guarantee:
SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE;
What effect would this command have onthe database（）

A.The extents in the undo tablespace retain data until the next full database backup.
B.The extents containing committed undo in the undo tablespace are not overwritten for at least 15 minutes.
C.The extents containing committed data in the undo tablespace are not overwritten until the instance is shutdown.
D.The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritten

單項(xiàng)選擇題

You want to enable archiving on your database. Presently， the database is running in NOARCHIVELOG mode.Given below are the steps to accomplish the task in random order：
1. Shut down the instance.
2. Execute the ALTER DATABASE ARCHIVELOG command.
3. Start up the instance and mount the database.
4. Set the DB_RECOVERY_FILE_DEST initialization parameter to $ORACLE_HOME/dest_1.
5. Open the database.
Which is the correct sequence of steps for accomplishing the task（）

A.4， 1， 3， 2， 5
B.1， 3， 4， 5， 2
C.1， 3， 2， 5； 4 not required
D.4， 1， 5， 2； 3 not required
E.1， 3， 4， 5； 2 not required

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你可能感興趣的試題

Your database instance is configured with automatic undo management and the UNDO_RETENTIONparameter is set to 900 seconds. You executed the following command to enable retention guarantee: SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE; What effect would this command have onthe database（）

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Your database instance is configured with automatic undo management and the UNDO_RETENTIONparameter is set to 900 seconds. You executed the following command to enable retention guarantee:
SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE;
What effect would this command have onthe database（）