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單項選擇題

You are using RMAN to perform a closed database backup of your database. You issue these RMAN commands: STARTUP MOUNT; BACKUP 
FORMAT ’/BACKUP/df_%d_%s_%p.bus’ 
DATABASE filesperset = 2; 
Which components are included in the backup?()

A.Only the data files.
B.Only the data files and the online logs.
C.The data files, control files, and the online logs.
D.The data files and control files, but not the online logs.

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