Which of the following packages maintains information in the recovery catalog？ （）

单项选择题WhichoneofthefollowingRMANcommandsisusedtoregisterthedatabasefileswithrepositorythatwerebackedupusingO Scommands？（）

A.CHANGE
B.CATALOG
C.CROSSCHECK
D.SWITCH

单项选择题Whichofthefollowingcommandsmustbeissuedtoremoveastoredscriptfromtherecoverycatalog？（）

A.DELETE SCRIPT
B.ERASE SCRIPT
C.REMOVE SCRIPT
D.UNCATALOG SCRIPT

单项选择题WhichoneofthefollowingstatementsabouttheTNSPINGutilityiscorrect？（）

A.It helps you to determine whether or not the Oracle database is running.
B.It requires the username and password to check the connectivity of the service.
C.It does not require the username and password to check the connectivity of the service.
D.It establishes a session with the database and checks the connectivity of the service.

单项选择题WhichOraclebackgroundprocessfreesSGAresourcesthatwereallocatedtoauserprocessthatfailed？（）

A.PMON
B.SMON
C.CKPT
D.LGWR
E.ARCn

单项选择题WhichofthefollowingSQL*Loaderparametersenablesyoutoloadaspecifiednumberofrecordsstoredinthedatafile？（）

A.ROWS
B.SKIP
C.LOAD
D.BINDSIZE