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043-101

原创 Linux操作系统 作者:jbymy2000 时间:2012-03-08 09:01:52 0 删除 编辑
101. You executed the following query in your database:
SELECT oldest_flashback_scn, oldest_flashback_time FROM V$FLASHBACK_D
ATABASE_LOG;
What would you determine from the output?
A. The time when the last flashback operation in your database was pe
rformed.
B. The time when the first flashback operation in your database was p
erformed.
C. A list of flashback operations performed in your database using SC
N and time.
D. The approximate time and the lowest system change number (SCN) to
which you can flash back your database.
Answer: D
SELECT * FROM V$FLASHBACK_DATABASE_LOG 显示出最低的scn 你可以
flashback 到和对应的时间.

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