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YouaremaintainingyourdatabaseinOracle10g.Youwanttostoretheinformationaboutthebackupofthedatabaseinthecontrolfile.Youissuethefollowingstatement:SQL>ALTERSYSTEMSETCONTROL_FILE_RECORD_KEEP_TIME=400;Whatistheoutcomeofthisstatement?()
A.Thestatementwillnotexecutesuccessfully.
B.Thestatementwillexecutesuccessfully,andthebackupsmetadatawillbemaintainedinthecontrolfilefor400days
C.Thestatementwillexecutesuccessfully,andthebackupsmetadatawillbemaintainedintherecoverycatalogfor400days.
D.Backupswillbedeletedfromthemediaafter400days.
参考答案