单项选择题FromtheV$SESSION_LONGOPSview,youfindthatsomeofthedatabaseusershavelongrunningqueriesandareconsumingalotofCPUtime.Thiscausesproblemsforyouwhenyoutrytologonasthesystemuserandperformsmallmaintenancetasks.YouwouldliketoensurethatusersSYSandSYSTEMgetpriorityoverallotherusers.Whichmethodwouldyouusetoachievethisobjective?()
A.create a plan directive in the SYS_GROUP
B.create the pending area for the consumer group
C.activate the provided SYSTEM_PLAN in Resource Manager
D.set the TIMED_STATISTICS parameter to TRUE in the parameter file
E.set the execution time limit for all users, except SYS and SYSTEM, in their profiles