Scheduling with DBMS_JOBS

Hello;

Does anyone know what the format would be to schedule a job every 12 hours? I know that for once every 24 hours, its:

DBMS_JOB.ISUBMIT(vJobNum, 'job_name;', SYSDATE, 'TRUNC(SYSDATE) + 1 + 20/24');

But I don't know what it would be for the 12 hour deal.

Anyone?

Thanks very much if you can help me.

Peter Fithian
Pfith_at_attglobal.net Received on Wed Jan 19 2000 - 10:05:18 CST