The current time is 12:00 noon. You want to recover the USERS tablespace from a failure that occurred at 11:50 a.m. You discover that the only member of an unarchived redo log group containing information from 11:40 a.m. onwards is corrupt.  With reference to this scenario, if you are not using Recovery Manager (RMAN), which recovery method would you use?()
A:time­based recovery
B:log sequence recovery
C:cancel­based recovery
D:change­based recovery
出自:Oracle认证