多项选择题
A. Creating the control file for the duplicate database
B. Restoring the target data files to the duplicate database
C. Performing complete recovery using all available backups
D. Generating a new， unique DBID for the duplicate database
E. Copying the online redo log files from the target database to the duplicate database
单项选择题 TapestreamingisnothappeningwhileperformingRMANtapebackup.Oninvestigation，youfindthatitisnotbecauseoftheincrementalbackuportheemptyfilebackupandthatRMANissendingdatablockstothetapedrivefastenough.Whatcouldbeasolutiontomaketapestreaminghappenduringthebackup？（）
多项选择题 Whichthreetaskscanbeperformedusingaduplicatedatabase？（）
单项选择题 Examine the CREATE DISKGROUP command used to create a disk group： SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY DISK ’ORCL： FRA3’ NAME misc1， ’ORCL： FRA4’ NAME misc2； In which situation would you use this method of disk group creation？（）