单项选择题
A. DBWn
B. RVWR
C. ARCH
D. RECO
E. TRWR
单项选择题 Youhavecreatedaresourceplan，DB_PLAN，usingDBMS_RESOURCE_MANAGER.CREATE_SIMPLE_PLANandyouwanttoimposearestrictiononutilizationofresourcesbythedatabaseusers.Whichstepmustbeperformedbeforeyoucanstartusingtheresourceplan？（）
单项选择题 Whilesettingupthethresholdfortablespacespaceusagemetricsforoneofyourtablespaces，youdefinethecriticalthresholdas60%andwarningthresholdas75%.Whatwouldbetheresultofthissetting？（）
单项选择题 Manually，yousettheconsumergroupofallofthenewlycreateduserstoMYDB_GRP.Youwanttheuserstobeabletochangetheirconsumergroupsaspertheapplicationrequirement.Whatwasthefirststepthatwasneededintheprocesstoachievethisobjective？（）