多项选择题
A.NOCHECKSUM
B.MAXCORRUPT
C.CHECK LOGICAL
D.BACKUP INCREMENTAL
E.CONFIGURE DEVICE TYPE ... PARALLELISM
单项选择题 Whichstatementistrueregardingremotearchivelogfiledestinations？（）
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？（）
单项选择题 WhichRMANcommandisusedtoverifythestatusofabackuporcopy，andalsoupdatestherepositorywhenfileshavebeendeletedusingoperatingsystemcommands？（）