单项选择题
A.cannot be used in RMAN
B.by starting up the database again
C.by using the CATALOG command of RMAN
D.by using the RECOVER CATALOG command in RMAN
E.by re-creating the target control file to rebuild the RMAN repository
单项选择题 Oneoftheredologmembersinyourdatabaseislost.YouqueriedV$logfileforfurtherdetails.Whatwouldbethemember’sstatus？（）
单项选择题 WhilesettingupanOracledatabaseforoneofyourcriticalapplications，youwanttoensurethatthedatabaseisbackedupatregularintervalswithoutyourintervention.Whatshouldyoudotoachievetheobjective？（）
多项选择题 UserScotthasupdatedthesalaryofoneoftheemployeesintheEMPLOYEEStableandhasnotcommittedthetransaction.Whatarethetwotypesoflocksthatthisscenariowouldleadto？（）