Can't stop a job execution

Question

I have Oracle 10g and a scheduled job which executes a hot backup every day at 2 AM.
Yesterday evening at 10 PM the listener hung. I rebooted the machine this morning and everything is fine now.
However, the Jobs page shows, that the last backup has been running for 15 hours now!
When I try to stop it, it says "The job was stopped successfully", but I see status is still "Running". I tried to delete it, but it says it must be stopped first.
Is there any way to kill this job?
I know there is a DBMS_SCHEDULER.STOP_JOB procedure, but it requires job name and I don't know how to get that.
I didn't find anything useful in dba_jobs or any other view.

Answer 1

I have had some success with finding the offending session and killing it, then killing the offending OS process.
Since we are using RAC (on RHEL), and the session is known to be running under a job class, which runs under a service, we find the offending session by:
select sid, serial#, status from gv$session where service_name = 'BACKUPS';
SID SERIAL# STATUS
3185 4664 ACTIVE
Then issue: ALTER SYSTEM KILL SESSION '3185, 4664' IMMEDIATE;
SID SERIAL# STATUS
3185 4664 KILLED
Now, find the OS process associated with that SID (assuming you are using UNIX):
select s.username, s.status, s.sid oracle_sid, s.process unix_pid, s.serial#, p.spid, s.machine, s.lockwait
     from v$session s, v$process p
     where s.sid = '&oracle_sid'
     and s.paddr = p.addr
Enter value for oracle_sid: 3185
USERNAME STATUS ORACLE_SID UNIX_PID
APP_SERVER INACTIVE 3185 1234
Then, leave sqlplus, and kill the offending OS process using a command prompt on the server:
kill -9 1234
After this, the job can be disabled/modified/dropped