单项选择题
A.Log file
B.Discard file
C.Parameter file
D.Bad file
单项选择题 IfyouCROSSCHECKthebackuppiecethatwaspreviouslymarkedasEXPIREDbutisnowavailable，whatwouldthestatusofthisbackuppiecebeintheRMANrepository？（）
单项选择题 Asaresultofamediafailure，thecurrentonlineredologgroupiscorrupted.Thedatabasecrashes，asthecurrentonlinegroupisinaccessible.Whichtypeofincompleterecoveryareyoumostlikelytoperform？（）
单项选择题 WhichOraclebackgroundprocessisresponsibleforprovidinginformationabouttheinstancenameassociatedwiththeservicehandlersandservicestothelistener？（）