单项选择题
A.RCO1 only.
B.DB01 only.
C.DB02 only.
D.DB01 and DB02 only.
E.DB01，DB02，and RC01.
单项选择题 Thedatabaseisconfiguredforautomaticarchivelogging.Alongwiththeotherrequiredparameters，thisentryisintheinitializationfile：log_archive_dest2="SERVICE=standby_db1MANDATORYREOPEN=600"Fromwheredoesthedatabaseresolvestandby_db1？（）
单项选择题 RMANautomaticallypropagateinformationaboutthedatabasestructure，archivedredologs，backupsets，anddatafilecopiesintotherecoverycatalogfromthetargetdatabase’scontrolfile.Thisinformationcanalsobepropagatedtothecatalogmanuallybyusingthe（）command.
多项选择题 WhichthreefeaturesareprovidedbyRecoveryManagerandNOTprovidedbyuser-managedbackupandrecovery？（）