dbms_jobs once an hour at the bottom of the hour

aix 5.2
oracle 9.2.0.7

Seems like it is very straight forward on how to get a job to start at the top of the hour then start every hour after that.

But I need to have the job start every 30 minutes after the hour and start every hour after that. ie

00:30 job start
01:30 job start
02:30 job start

etc.

any ideas on how to do this with dbms_jobs? Received on Mon Nov 21 2005 - 10:33:54 CST