inyourdatabaseinstance,theSTATISTICS_LEVELinitializationparameterissettoBASIC.Whatistheimpactofthissetting()A.Optimizerstatisticsarecollectedautomatically.B.Onlytimedoperatingsystem（OS）statisticsandplanexecutionstatisticsarecollected.C.ThesnapshotsfortheA
题目
inyourdatabaseinstance,theSTATISTICS_LEVELinitializationparameterissettoBASIC.Whatistheimpactofthissetting()
A.Optimizerstatisticsarecollectedautomatically.
B.Onlytimedoperatingsystem（OS）statisticsandplanexecutionstatisticsarecollected.
C.ThesnapshotsfortheAutomaticWorkloadRepository（AWR）arenotgeneratedautomatically.
D.SnapshotscannotbecollectedmanuallybyusingtheDBMS_WORKLOAD_REPOSITORYpackage.
E.TheOracleserverdynamicallygeneratesthenecessarystatisticsontablesaspartofqueryoptimization.