单项选择题
Which of the following environment variables specifies a non-default location for the listener configuration file？（）
A.LSN_ADMIN B.TNS_ADMIN C.ADMIN_TNS D.TSN_ADMIN
单项选择题 Whichofthefollowingpackagesmaintainsinformationintherecoverycatalog？（）
单项选择题 WhichoneofthefollowingRMANcommandsisusedtoregisterthedatabasefileswithrepositorythatwerebackedupusingO/Scommands？（）
单项选择题 Whichofthefollowingcommandsmustbeissuedtoremoveastoredscriptfromtherecoverycatalog？（）
