--submit
select * from reportnobenefit;
variable job1 number;
begin
dbms_job.submit(:job1,'PKG_JOBS.CALC_NOBENEFIT;', sysdate,'trunc(last_day(sysdate))+25/24'); 
end;

--run
begin
dbms_job.run(222);
commit;
end;

--remove
variable job1 number;
begin
dbms_job.remove(281);
commit;
end;

select * from user_jobs;--查看调度任务
select * from dba_jobs_running;--查看正在执行的调度任务
select * from dba_jobs;--查看执行完的调度任务