Which one of the following parameters must be specified when exporting objects that has integrity constraints referencing objects that are currently being accessed by other users？（）

单项选择题Whichofthefollowingrolesprovidestheprivilegestomaintainandquerytherecoverycatalogschema？（）

A.EXECUTE_CATALOG_ROLE
B.CONNECT
C.RESOURCE
D.RECOVERY_CATALOG_OWNER
E.RECOVERY_CATALOG_USER

单项选择题WhichofthefollowingfilescannotbecatalogedusingtheCATALOGcommand？（）

A.Data files
B.Control files
C.Archived log files
D.Files storing RMAN scripts

单项选择题Toperformadatabasepoint-in-timerecoveryusingRMAN，afterdatabaserestoration，youmustensurethatthedatabaseisinwhichofthefollowingstates？（）

A.OPEN
B.MOUNT
C.NOMOUNT
D.CLOSE

单项选择题Using the command shown here， what time format must you specify to recover the database until a point-in-time？（）  SQL> RECOVER DATABASE UNTIL TIME ’<time format>’；

A.YYYY-DD-MM:HH24:SS:MI 
B.YYYY-DD-MM:HH24:SS:MM 
C.YYYY-MM-DD:HH24:MI:SS 
D.YYYY-DD-MM:SS:MI:HH24

单项选择题WhichofthefollowingstatementsisNOTtrueaboutRMAN？（）

A.It improves usability by enabling you to reuse the scripts to perform recovery operations.
B.It detects block corruption while restoration and recovery operations.
C.It enables you to perform block media recovery.
D.It is capable to recover through unrecoverable operations， with only full database backups.