多项选择题
A.Application Server Control
B.Oracle Management Service
C.Oracle Enterprise Manager Repository
D.Oracle Enterprise Manager Database Control
单项选择题 YouworkasadatabaseadministratorforSupportcenter.cn.Youwanttoconfiguredatabasebackupstoberunautomatically.Whichtoolorutilitywouldyouusetoachievethis？（）
多项选择题 You work as a database administrator for Supportcenter.cn. While setting up the database for your production environment， you want to create a user according to the requirements in the exhibit. Which three options of the CREATE USER command would you use to achieve this objective？（）
多项选择题 YouworkasadatabaseadministratorforSupportcenter.cn.YouareworkingonOracleDatabase10g.Toforwardclientconnectionstoaninstance，thelistenermustknowinformationsuchasthenameoftheinstanceandwheretheinstance’sORACLE_HOMEislocated.Howdoesthelistenergetthisinformation？（）