Disable or Enable all Oracle jobs

There  are two  kinds  of  jobs  dbms_job and  dbms_scheduler  jobs

1. Disable
• dbms_job
  alter system set  job_queue_processes=0;
• dbms_scheduler
  exec dbms_scheduler.set_scheduler_attribute('scheduler_disabled','true');
2. Enable
• dbms_job
  alter system set job_queue_processes=10;
• dbms_scheduler
  exec dbms_scheduler.set_scheduler_attribute('scheduler_disabled','true');