Complete Defunct HR Workflow Processes = Notification Spam?

We recently started a Request Set that includes the 'Complete Defunct HR Workflow Processes' Concurrent Program. The first day we spawned ~270 notifications to people, basically telling them that a prior Notification was being cancelled. These were Notifications the user did not click the 'OK' button after reading.
A week later (after a patching event and instance bounce), several thousand NOtifications were spawned, with basically the same message. When i look at the wf_notifications table, comparing begin and end dates to the timeframe these were being spawned, i only see ~200 normal everyday notifications having been sent. But, when i look at the wf_notification_out table, there i see NOtifications in the thousands. They seem to be related to Event oracle.apps.wf.notification.send; but i cannot see what triggered this event.
To make matters worse, some of these are NOtifications that had already been sent the previous week, only this time multiple (in some cases hundreds) of copies were sent. Same Notification, re-sent hundreds of time.
The timing seems to suggest an instance bounce done shortly before people reported a problem.
Can anyone shed any light on why this haoppened? And how to stop this ever happening again?

Hi,
Did you run the purge routine after completing the concurrent request?
Matt
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WF_ENGINE.CreateProcess ---
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Edited by: 901929 on 20-Jul-2012 01:38
Edited by: 901929 on 20-Jul-2012 01:39

L,
Please check the following:
1. Since this is pure PLSQL you can have a SQL script where you enable a database event to get a trace and then run tkprof on the output to spot any performance problem. You can use something like:
alter session set tracefile_identifier='Background' max_dump_file_size='unlimited' events '10046 trace name context forever, level 12';
begin
wf_engine.CreateProcess(...);
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commit;
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I'd be wary of using a WAIT activity, since this will essentially have the workflow running forever in the same SQL session. If you ever need to shutdown the database, then you would have to kill the session (or do a shutdown abort), which will rollback all the Workflow transactional data.
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http://www.workflowfaq.com
http://forum.workflowfaq.com

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