多项选择题
Which Scheduler view(s) can be queried to see which jobs are currently executing? （）
A. DBA_SCHEDULER_JOB_RUN_DETAILS B. DBA_SCHEDULER_RUNNING_JOBS DBA C. DBA_SCHEDULER_CURRENT_JOBS D. DBA_SCHEDULER_JOBS DBA E. DBA_SCHEDULER_EXECUTING_JOBS
单项选择题 Whichstatementistrueregardingsynonyms?（）
单项选择题 Which of the following is not a valid calendaring syntax element?（）
多项选择题 WhichtwostatementsaretrueregardingtheUSINGclauseintablejoins?（）
