單項選擇題在進(jìn)行關(guān)閉數(shù)據(jù)庫的備份之前,不能用哪個命令關(guān)閉數(shù)據(jù)庫?()

A.SHUTDOWN IMMEDIATE
B.SHUTDOWN NORMAL
C.SHUTDOWN TRANSACTIONAL
D.SHUTDOWN ABORT


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