17. The current time is 12:00 noon. You want to recover the USERS tab
lespace from a failure that occurred at 11:50 a.m. You discover that
the only member of an unarchived redo log group containing informatio
n from 11:40 a.m. onwards is corrupt.
With reference to this scenario, if you are not using Recovery Manage
r (RMAN),
which recovery method would you use?
A. time-based recovery
B. log sequence recovery
C. cancel-based recovery
D. change-based recovery
Answer: C
不完全恢复有4种。
time_based,cancel_based,change-based,log sequence recovery.
time_based是基于时间的，你得知道你想恢复到什么时间，出问题在什么时间。而且是越快越好的。
cancel_based是让数据库恢复到直到你取消。
change_based是恢复到某个scn
log sequence是恢复到某个日志文件。
time_based,cancel_based,change-based,log sequence recovery.
time_based是基于时间的，你得知道你想恢复到什么时间，出问题在什么时间。而且是越快越好的。
cancel_based是让数据库恢复到直到你取消。
change_based是恢复到某个scn
log sequence是恢复到某个日志文件。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/11312660/viewspace-717635/ ，如需转载，请注明出处，否则将追究法律责任。
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