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Which two statements are true about Block Media Recovery （BMR）？（）
A: BMR increases the Mean Time To Recover （MTTR）.
B: BMR can only be implemented using Recovery Manager （RMAN）.
C: The blocks that need to be recovered are accessible during BMR.
D: BMR cannot be performed using cumulative incremental backups.
E: The datafile must be restored if most of the blocks in the datafile are corrupt.

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出自：Oracle认证

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