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Youexecutedthefollowingqueryinyourdatabase:SELECToldest_flashback_scn,oldest_flashback_timeFROMV$FLASHBACK_DATABASE_LOG;Whatwouldyoudeterminefromthe output?()
A.Thetimewhenthelastflashbackoperationinyourdatabasewasperformed.
B.Thetimewhenthefirstflashbackoperationinyourdatabasewasperformed.
C.AlistofflashbackoperationsperformedinyourdatabaseusingSCNandtime.
D.Theapproximatetimeandthelowestsystemchangenumber（SCN）towhichyoucanflashbackyourdatabase.
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更多 “ Youexecutedthefollowingqueryinyourdatabase:SELECToldest_flashback_scn,oldest_flashback_timeFROMV$FLASHBACK_DATABASE_LOG;Whatwouldyoudeterminefromthe output?() A.Thetimewhenthelastflashbackoperationinyourdatabasewasperformed.B.Thetimewhenthefirstflashbackoperationinyourdatabasewasperformed.C.AlistofflashbackoperationsperformedinyourdatabaseusingSCNandtime.D.Theapproximatetimeandthelowestsystemchangenumber（SCN）towhichyoucanflashbackyourdatabase. ” 相关考题
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