602.On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30 am. 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
正确答案是B