单选题Which of the following is not an advantage of block media recovery （BMR）？（）A Reduced MTTR.B Datafiles remain offline while corrupt blocks are repaired.C Datafiles remain online while corrupt blocks are repaired.D A and C
单选题
Which of the following is not an advantage of block media recovery （BMR）？（）
A
Reduced MTTR.
B
Datafiles remain offline while corrupt blocks are repaired.
C
Datafiles remain online while corrupt blocks are repaired.
D
A and C
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