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多选题
Which two database operations can be performed at the MOUNT stage of database startup？（）
A
renaming of data files
B
dropping the database user
C
renaming of control files
D
multiplexing of control files
E
configuring the database in ARCHIVELOG mode
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Which two operations are NOT performed by the DUPLICATE command in Recovery Manager (RMAN) whileduplicating a running database? ()(Choose Two)
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You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?() (Choose two).
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Which two operations are NOT performed by the DUPLICATE command in Recovery Manager (RMAN) whileduplicating a running database? （）(Choose Two)A、Creating the control file for the duplicate databaseB、Restoring the target data files to the duplicate databaseC、Performing complete recovery using all available backupsD、Generating a new, unique DBID for the duplicate databaseE、Copying the online redo log files from the target database to the duplicate database
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Which two database operations can be performed at the MOUNT stage of database startup？（）A、renaming of data filesB、dropping the database userC、renaming of control filesD、multiplexing of control filesE、configuring the database in ARCHIVELOG mode
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多选题You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation?（）AThe backup as copy can only be taken to diskBThe backup as copy can only be taken to tapeCBackup can be performed only when the instance is shutdownDBackup will constitute all used and unused blocks in the database
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单选题You executed the following query in your database： SELECT oldest_flashback_scn， oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG； What would you determine from the output？（）A
The time when the last flashback operation in your database was performed.B
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The approximate time and the lowest system change number （SCN） to which you can flash back your database.
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多选题Which two statements are true about the duplexing of the backups taken by RMAN？（）AIt’s only supported for the backups performed on the tapeBIt is not supported for backup operations that produce image copiesCDuplex backups need a parallelism for the device to be equal to number of copiesDDuplex backups can be performed to either disk or tape， but cannot be performed on tape and disk simultaneously
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多选题Which two statements are true about the duplexing of the backups taken by RMAN? （）(Choose two.)AIt's only supported for the backups performed on the tapeBIt is not supported for backup operations that produce image copiesCDuplex backups need a parallelism for the device to be equal to number of copiesDDuplex backups can be performed to either disk or tape, but cannot be performed on tape and disk simultaneously
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