DBMS_SCHEDULER.   How do I set frequency to run every 30 minutes

Hi,
I need this job to run every 30 minutes, lets say on 15 minutes and 45 minutes past the hour. What are the necessray changes. I have looked through the docs and have been getting errors when I try and change the line repeat_interval.
begin
dbms_scheduler.create_schedule(
schedule_name =>'HOTLIST_GENERATION',
start_date =>to_date('01-MAR-2007 02:30','DD-MON-YYYY HH24:MI'),
repeat_interval =>'FREQ=Hourly',
end_date =>NULL,
comments =>'Schedule for Hotlist generation');
end;

Perhaps repeast_interval => 'FREQ=MINUTELY; INTERVAL=30'
See the dbms_scheduler entry in the Oracle PL/SQL Packages and Types manual.
HTH -- Mark D Powell --

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