单项选择题
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单项选择题 YouwanttoimplementthebackupandrecoverystrategyinyourdatabaseusingRecoveryManager（RMAN）.YouhavechosenthecontrolfileofthetargetdatabasefortheRMANrepository.Whichcommand-lineRMANcommandwouldyouusetoestablishalocalconnectionbetweenRMANandtheRMANrepositoryifyourdatabaseisusingpasswordfileauthentication？（）
单项选择题 YouaremaintainingyourdatabaseinOracle10g.Youarenotusingtherecoverycatalogtomaintainthebackupmetadatainformation.Youwanttoenablethereusablesectionofthecontrolfiletoexpanditselfiftheoldestrecordcannotbereused，andwheneveranewrecordisaddedtothereusablesectionofthecontrolfile.WhichvaluewillyousetfortheCONTROL_FILE_RECORD_KEEP_TIMEparameter？（）
单项选择题 You issued the RMAN>SHOW ALL； command. The output of this command is as follows： After analyzing the output， which conclusion will you draw？（）