Choose three.
Which three are true about block media recovery?
A.To use it Flashback Database must be enabled. B.A block being recovered is not accessible. C.It cannot repair logical corruption. D.It can be performed on noncorrupt blocks. E.The target database for which one or more blocks are to be recovered must be正确答案ABF
In the OPEN state. F.The data file containing the block being recovered remains online.
