单项选择题
A. to undo the changes made to the EMP table since the specified time
B. to restore the EMP table that was wrongly dropped from the database
C. to view the transactions that have modified the EMP table since the specified time
D. to view the changes made to the EMP table for one or more rows since the specified time
多项选择题 Intheparameterfileofyourproductiondatabase，theFAST_START_MTTR_TARGETparameterissetto300tooptimizeinstancerecovery.Whileobservingtheperformanceofthedatabaseduringinstancerecovery，youfindthattheredologfilesarenotsizedproperlytosupportthisactivity.Whichtwosourcescouldyouusetodeterminetheoptimalsizeoftheredologfiles？（）
多项选择题 Younoticedthattheindextablespaceinyourdatabaserequiresarecovery.However，insteadofperformingamediarecovery，youdecidedtore-createtheindexesinanewtablespace.Whichtwooptionswouldyouusetoreducethetimeittakestore-createtheindexes？（）
单项选择题 You want to create a consumer group， GROUP1， and you execute the following command in the command-line interface： SQL> EXEC DBMS_RESOURCE_MANAGER.CREATE_CONSUMER_GROUP （CONSUMER_GROUP =>’group1’， COMMENT => ’New Group’）； This command errorsout displaying the following message： ERROR at line 1： ORA-01031： insufficient privileges ORA-06512： at "SYS.DBMS_RMIN"， line 115 ORA-06512： at SYS.DBMS_RESOURCE_MANAGER"， line 108 ORA-06512： at line 1 What action would you take to overcome this error？（）