问答题

Inwhichtwocaseswouldyouperformonlyconsistentbackup？（）

A.Youareworkingonadatabasewheredowntimeisnottolerated.
B.Youareworkingonadatabasewheredowntimecanbetolerated.
C.YouareworkingonadatabasethatoperatesinARCHIVELOGmode.
D.YouareworkingonadatabasethatoperatesinNOARCHIVELOGmode.
E.Youareworkingonadatabasewhereallthetablespacesarelocallymanaged.
F.Youareworkingonadatabasewherecontrolfilesandredologfilesaremultiplexed.
G.Youareworkingonadatabasewherecontrolfilesandredologfilesarenotmultiplexed.

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问答题

UserScotthasupdatedthesalaryofoneoftheemployeesintheEMPLOYEEStableandhasnotcommittedthetransaction.Whatarethetwotypesoflocksthatthisscenariowouldleadto？（）

A.nulllockontherowbeingupdated
B.nulllockonthetablecontainingtherow
C.ROWSHARElockfortherowbeingupdated
D.ROWEXCLUSIVElockfortherowbeingupdated
E.sharedrow-exclusivelockfortherowbeingupdated
F.ashareabletablelockforthetablecontainingtherow
G.exclusivetable-levellockforthetablecontainingtherow

问答题

WhichtwostatementsregardingcompressedbackupsinRecoveryManager（RMAN）aretrue？（）

A.Backupcompressionisdisabledbydefault.
B.Backupcompressioncanbeusedwithbothbackupsetsandimagecopies.
C.BackupcompressioncannotbeenabledusingtheCONFIGUREcommand.
D.BackupcompressionworksonlyiftheCOMPATIBILITYparameterissetto9.0.0.0orhigher.
E.Backupcompressionappliestoonlybackupsets.
F.Backupcompressionappliestoonlyimagecopies.