單項選擇題

You executed the following command in Recovery Manager （RMAN）： RMAN> RESTORE CONTROLFILE; Which operation must you perform before this command is executed？（）

A.back up the control file to trace
B.bring database to the MOUNT state
C.open a connection to the RMAN recovery catalog， which contains the RMAN metadata for the target database
D.set the database ID （DBID）， but only if the DB_NAME parameter associated with the target database is unique in the recovery catalog

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多項選擇題

You executed the following command in Recovery Manager （RMAN） to perform a backup of the DETTBS tablespace：
RMAN> BACKUP TABLESPACE DETTBS;
Under which conditions would this command execute successfully？（）

A.The database is in NOMOUNT state.
B.The database is in ARCHIVELOG mode and the tablespace is online.
C.The database is in ARCHIVELOG mode and the tablespace is offline.
D.The database is in NOARCHIVELOG mode and the tablespace is online.
E.The database is in NOARCHIVELOG mode and the tablespace is offline.

多項選擇題

You have set the value of the NLS_TIMESTAMP_TZ_FORMAT parameter in the parameter file to YYYYMMDD. The default format of which two data types would be affected by this setting？（）

A.DATE
B.TIMESTAMP
C.INTERVAL YEAR TO MONTH
D.INTERVAL DAY TO SECOND
E.TIMESTAMP WITH LOCAL TIME ZONE

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You executed the following command in Recovery Manager （RMAN）： RMAN> RESTORE CONTROLFILE; Which operation must you perform before this command is executed？（）

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You executed the following command in Recovery Manager （RMAN） to perform a backup of the DETTBS tablespace： RMAN> BACKUP TABLESPACE DETTBS; Under which conditions would this command execute successfully？ （）

You have set the value of the NLS_TIMESTAMP_TZ_FORMAT parameter in the parameter file to YYYY­MM­DD. The default format of which two data types would be affected by this setting？（）

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You executed the following command in Recovery Manager （RMAN） to perform a backup of the DETTBS tablespace：
RMAN> BACKUP TABLESPACE DETTBS;
Under which conditions would this command execute successfully？（）

You have set the value of the NLS_TIMESTAMP_TZ_FORMAT parameter in the parameter file to YYYYMMDD. The default format of which two data types would be affected by this setting？（）