RMANenablesyoutoopenthetargetdatabasewhenitisalreadymounted.WhichcommandmustyouexecuteattheRMANprompttoopenthedatabase？（）A.’SQL ALTER DATABASE OPEN’；B.SQL ALTER DATABASE ’OPEN’；C.OPEN DATABASE；D.DATABASE OPEN

单项选择题

RMAN enables you to open the target database when it is already mounted. Which command must you execute at the RMAN prompt to open the database？（）

A.’SQL ALTER DATABASE OPEN’；
B.SQL ALTER DATABASE ’OPEN’；
C.OPEN DATABASE；
D.DATABASE OPEN

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