单项选择题
A. It cancels all pending disk drops within the disk group.
B. It restores disks that are being dropped as the result of a DROP DISKGROUP operation
C. It mounts disks in the disk group for which the drop-disk operation has already been co pleted
D. It restores all the dropped disks in the disk group for which the drop-disk operation has already been completed
E. It adds previously dropped disks back into the disk group
单项选择题 You are using Recovery Manager （RMAN） with a recovery catalog to back up your production database. The backups and the archived redo log files are copied to a tape drive on a daily basis. Because of media failure， you lost your production database completely along with the recovery catalog database. You want to recover the target database and make it functional. You consider performing the following steps to accomplish the task： 1） Restore an autobackup of the server parameter file. 2） Restore the control file 3） Start the target database instance 4） Mount the database 5） Restore the data files 6） Open the database with RESETLOGS option 7） Recover the data files 8） Set DBID for the target database Which option illustrates the correct sequence that you must use？（）
多项选择题 WhichtwooperationsareNOTperformedbytheDUPLICATEcommandinRecoveryManager（RMAN）whileduplicatingarunningdatabase？（）
单项选择题 TapestreamingisnothappeningwhileperformingRMANtapebackup.Oninvestigation，youfindthatitisnotbecauseoftheincrementalbackuportheemptyfilebackupandthatRMANissendingdatablockstothetapedrivefastenough.Whatcouldbeasolutiontomaketapestreaminghappenduringthebackup？（）