单项选择题
A. DBA_SCHEDULER_JOB_RUN_DETAILS
B. DBA_SCHEDULER_RUNNING_JOBS
C. DBA_SCHEDULER_JOBS
D. DBA_SCHEDULER_JOB_LOG
单项选择题 Youwanttopurgejobentriesolderthan5daysfromthejoblog.Youdonotwanttopurgewindowlogentries.Whichcommandwillyouusetoaccomplishthistask？（）
单项选择题 Yoursystemperformsheavytransactionprocessingbetween8：00A.M.and5：00P.M.butrunsbatchprocessingandreportsafterthat.Youdecidetocreateaseparateresourceplantogovernresourceallocationforeachtimeperiod.Whichschedulerobjectwillyouusetoswitchautomaticallybetweenthetworesourceplans？（）
单项选择题 You executed the following code： BEGIN DBMS_SCHEDULER.SET_ATTRIBUTE （ NAME => ’JOB_A’， ATTRIBUTE => ’JOB_PRIORITY’， VALUE => 7）； END； / After analyzing the above code， what conclusion will you draw？（）