First of all, my apology for cross posting this topic but I didn't get
any response from java forum.

My question was that, it seems there are different interpretations of
timer service in the spec. EJB spec merely touches on the issue that
timer should be persistent in case of crash, but says nothing about how
it is to be handled when the AS is shutdown. But then, all of us
shutdown and restart AS regularly.

JBoss AS does not persist timer if it is shutdown. Does anyone knows
how timer service is being handled in other AS? While my main concern
is JBoss AS, but I think I need to be prepared for change in any case.

This issue has been raised in
http://jira.jboss.com/jira/browse/JBAS-1091.

Any input is appreciated.