多项选择题
You issue this SQL command to perform an online backup of the USER_DATA tablespace：ALTER TABLESPACE user_data BEGIN BACKUP；Next， you issue an operating system command to back up user_data01.dbf， the file that belongs to the USER_DATA tablespace. You then experience an instance failure.
Which three statements are true？（）
A.A
B.B
C.C
D.D
E.E
相关考题
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单项选择题
WhichRMANcommandisusedtoverifythestatusofabackuporcopy，andalsoupdatestherepositorywhenfileshavebeendeletedusingoperatingsystemcommands？（）
A.CHANGE
B.RESYNC
C.CATALOG
D.CROSSCHECK -
单项选择题
UndertheOracleSharedServerarchitecture，client-userprocessesultimatelyconnecttoa（）
A.service
B.listener
C.dispatcher
D.shared server process -
多项选择题
Whichtwoaretrueregardingdirect-pathexports？（）
A.Direct-path export is typically faster.
B.Direct-path export can be invoked interactively.
C.Direct-path export is character set independent.
D.Direct-path export bypasses the SQL-command processing layer.
E.Direct-path export can be used to export rows containing LOBs and BFILEs.
