单项选择题
A.synch catalog
B.resync catalog
C.replicate catalog
D.update catalog
E.restore catalog
单项选择题 Whichcommandwouldyouusetodeterminewhatdatabasebackupsarecurrentlyavailableforrestore?（）
单项选择题 YouareusingRMANtobackupyourARCHIVELOGmodedatabase.Youhaveenabledcontrol-fileautobackups.WhichfilesarenotbackedupduringtheRMANbackup?（）
单项选择题 Whichcommandwillrestorealldatafilestothedate9/30/2008at18:00hours?（）