YouexecutedthefollowingcommandinRecoveryManager(RMAN):RMAN>RESTORECONTROLFILE;Whichoperationmustyouperformbeforethiscommandisexecuted?()
A.backupthecontrolfiletotrace
B.bringdatabasetotheMOUNTstate
C.openaconnectiontotheRMANrecoverycatalog,whichcontainstheRMANmetadataforthetargetdatabase
D.setthedatabaseID(DBID),butonlyiftheDB_NAMEparameterassociatedwiththetargetdatabaseisuniqueintherecoverycatalog