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On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30am. Which option must you use to check whether a flashback operation can recover the database to the specified time?（）
A:Check the alert log file
B:Query the V$FLASHBACK_DATABASE_LOG view
C:Query the V$RECOVERY_FILE_DEST_SIZE view
D:Query the V$FLASHBACK_DATABASE_STAT view
E:Check the value assigned for the UNDO_RETENTION parameter

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出自：Oracle认证

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