问题:
A . The root container can be flashed back without flashing back the pluggable databases (PDBs).
B . To enable flashback database, the CDB must be mounted.
C . Individual PDBs can be flashed back without flashing back the entire cdb.
D . The DB_FLASHBACK RETENTION_TARGET parameter must be set to enable flashback of the cdb.
E . A CDB can be flashed back specifying the desired target point in time or an SCN, but not a restore point.
● 参考解析
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