YouaremanaginganOracleDatabase11gdatabasewiththefollowingbackupstrategy:1.OnSund
2021-05-06
YouaremanaginganOracleDatabase11gdatabasewiththefollowingbackupstrategy：1.OnSunday，anincrementallevel0tapebackupisperformed.2.MondaythroughSaturday，acumulativeincrementallevel1tapebackupisperformed.Whichtwostatementsaretrueregardingthebackupsperformed（）
A.Thebackupperformedinstep1backsupallblocksthathaveeverbeeninuseinthedatabase.
B.Thebackupperformedinstep2copiesalltheblockschangedsincethemostrecentlevel0backup.
C.Thebackupperformedinstep1backsupalltheblockschangedsincethemostrecentlevel1backup.
D.Thebackupperformedinstep2backsupallblocksthathavechangedsincethemostrecentincrementalbackupatlevel1.
正确答案：参考A, B
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