YouexecutedthefollowingcommandinRecoveryManager(RMAN):RMAN>RESTORECONTROLFILEWhichoperationmustyouperformbeforethiscommandisexecuted?() A.backupthecontrolfiletotraceB.bringdatabasetotheMOUNTstateC.openaconnectiontotheRMANrecoverycatalog，whichcontainstheRMANmetadataforthetargetdatabaseD.setthedatabaseID（DBID），butonlyiftheDB_NAMEparameterassociatedwiththetargetdatabaseisuniqueintherecoverycatalog
YouexecutedthefollowingcommandinRecoveryManager(RMAN):RMAN>RESTORECONTROLFILEWhichoperationmustyouperformbeforethiscommandisexecuted?()
A.backupthecontrolfiletotrace
B.bringdatabasetotheMOUNTstate
C.openaconnectiontotheRMANrecoverycatalog，whichcontainstheRMANmetadataforthetargetdatabase
D.setthedatabaseID（DBID），butonlyiftheDB_NAMEparameterassociatedwiththetargetdatabaseisuniqueintherecoverycatalog
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