单项选择题
You work as a database administrator for Supportcenter.cn. One of the user sessions was terminated abnormally in the middle of a transaction. What does Oracle database do to recover it？（）
A.Uses undo data for roll forward
B.Uses Flashback Log for recovery
C.Uses online redo logs to roll back
D.Uses undo data to roll back the transaction
E.Uses Recovery Manager （RMAN） to roll back
F.Uses the System Monitor （SMON） background process to perform instance recovery
相关考题
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多项选择题
YouworkasadatabaseadministratorforSupportcenter.cn.Yourlistenerprocess，L1，iscurrentlylisteningtothreedatabases：CertKINDB04，SupportCenterDB05andSupportCenterDB06.UsingDatabaseConfigurationAssistant（DBCA）youcreateonemoredatabase，SupportCenterDB07，andenabledynamicregistration.WhichtwocommandsofListenerControlUtility（lsnrct1）wouldyouusetodeterminewhetherthedynamicregistrationoccurredforthedatabase，SupportCenterDB07，withtheL1listenerprocess？（）
A.SHOW L1
B.SPAWN L1
C.STATUS L1
D.SERVICES L1
E.STATUS LISTENER
F.SERVICES LISTENER
G.SHOWcurrent_listener -
单项选择题
YouworkasadatabaseadministratorforSupportcenter.cn.YouareusingRecoveryManager（RMAN）forbackupandrecoveryofyourdatabase.YouexecutedthedeletecommandinRMANtodeleteabackupofatablespace.Whichstatementistrueinthisscenario？（）
A.The backup status will be marked expired in RMAN recovery catalog.
B.The backup status will be marked deleted in RMAN recovery catalog after you execute the crosscheck command.
C.The backup will be deleted physically from the OS （Operating system）and the backup information is removed from the recovery catalogl
D.The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）.
E.The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）， if you are not using Oracle Managed Files （OMF）. -
多项选择题
YouworkasadatabaseadministratorforSupportcenter.cn.Oneofthedatabaseusersaccidentallydeletedalltherowsofacriticaltableandcommittedthedeleteat1：30p.m.Youseniordatabaseadministrator，SupportCenter，asksyoutoretrievethelostdata.Whichtwoactionswouldyouusetoensurethatthereisnoimpactonotherconnecteduserswhileretrievingthedeletedrows？（）
A.Use a flashback query to retrieve the rows that were deleted
B.Useconventialincremental export and then import the affected object
C.Shutdown the database inNORMALmode and restart the database instance
D.Use DBMS_META package to reconstruct the object using undo segments
E.UseTablespacePoint in Time Recovery （TSPITR） method to recover the table and the data
F.Use Oracle DataPumptwithflashback_timeoption toentableflashback export and then import the affected object.
