多项选择题
A.flashback log files
B.backups that have become obsolete
C.copies of the data files and control files
D.archived redo log files that have multiple copies in a different archive location and not backed up
单项选择题 You are working on an instance started using the SPFILE. You want to move the Flash Recovery Areaof your database to a new location. You want the Flashback log files to be stored in the new location. Given below are the steps to accomplish the task in random order： 1）Shut down the instance. 2）Change the value of the DB_RECOVERY_FILE_DEST initialization parameter to a new value. 3）Execute the ALTER DATABASE FLASHBACK OFF command. 4）Start up the instance and mount the database. 5）Execute the ALTER DATABASE FLASHBACKON command. 6）Open the database. Select the correct order in which these tasks need to be performed. （）
单项选择题 You are managing an Oracle Database 11g database. You want to ensure the recovery of thedatabase to the point of failure. Which configuration will you do to accomplish the task（）
单项选择题 Theinstanceabnormallyterminatesbecauseofapoweroutage.Whichstatementistrueaboutredologfilesduringinstancerecovery（）