單項選擇題

You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） for backup and recovery of your database. You executed the delete command in RMAN to delete a backup of a tablespace. Which statement is true in this scenario？（）

A.The backup status will be marked expired in RMAN recovery catalog.
B.The backup status will be marked deleted in RMAN recovery catalog after you execute the crosscheck command.
C.The backup will be deleted physically from the OS （Operating system）and the backup information is removed from the recovery catalogl
D.The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）.
E.The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）， if you are not using Oracle Managed Files （OMF）.

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多項選擇題

You work as a database administrator for Supportcenter.cn. One of the database users accidentally deleted all the rows of a critical table and committed the delete at 1：30 p.m. You senior database administrator， SupportCenter， asks you to retrieve the lost data. Which two actions would you use to ensure that there is no impact on other connected users while retrieving the deleted rows？（）

A.Use a flashback query to retrieve the rows that were deleted
B.Useconventialincremental export and then import the affected object
C.Shutdown the database inNORMALmode and restart the database instance
D.Use DBMS_META package to reconstruct the object using undo segments
E.UseTablespacePoint in Time Recovery （TSPITR） method to recover the table and the data
F.Use Oracle DataPumptwithflashback_timeoption toentableflashback export and then import the affected object.

單項選擇題

You work as a database administrator for Supportcenter.cn. When you tried to connect to the database， you received the following error：
ERROR：
ORA-12541：TNS：no_listener
You found that the listener is not running on the server， so you issued the following command in the Listener Control utility to start the listener.
lsnrctl>START
What statement is true？（）

A.It would attempt to start the default listener
B.It would start the most recently created listener.
C.It would display an error with a message asking for the listener name to be specified.
D.It would show you a list of listeners and prompts for the listener name that you want to start.

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You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） for backup and recovery of your database. You executed the delete command in RMAN to delete a backup of a tablespace. Which statement is true in this scenario？（）

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You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） for backup and recovery of your database. You executed the delete command in RMAN to delete a backup of a tablespace. Which statement is true in this scenario？（）