How to delete jobs stay in 'Running' status in OEM Grid Control?

Problem Description:
Job stays in 'Running' status, never complete and can't delete from OEM Grid Control.


1. How to find the job_id:

connect sysman@poem
select job_id
from mgmt_job
where job_name = 'BACKUP_ODS_ARCH_2HRS'
and job_owner = 'SYSMAN';


2. How to stop running job:

connect sysman@poem
exec mgmt_job_engine.stop_all_executions_with_id('459582F20C8B6AF4E0403E0ACECC4DCB',TRUE);
commit;

3. How to delete the job:

connect sysman@poem
exec mgmt_job_engine.delete_job('BACKUP_ODS_ARCH_2HRS','SYSMAN');
commit;


Reference:
Note:430626.1
Note:404211.1