181.Your database has a backup that was taken yesterday (Tuesday) between 13:00 and 15:00 hours. This is the only backup you have. You have lost all the archived redo logs generated since the previous Monday, but you have archived redo logs available from the previous Sunday and earlier. You now need to restore your backup due to database loss. To which point can you restore your database?
A. 13:00 on Tuesday.
B. 15:00 on Tuesday.
C. Up until the last available archived redo log on Sunday.
D. To any point; all the redo should still be available in the online redo logs.
E. The database is not recoverable.
Answer: E
你的数据库备份是昨天（星期二）下午13:00-15:00之间。这是你唯一的备份。您已经失去了自上星期一以来生成的所有归档重做日志，但您有上星期日之前的重做日志记录可使用。您现在由于数据库丢失需要恢复您的备份。你的数据库可以恢复到哪一个时点？由于没有归档日志，数据库不能恢复。
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