Wong, Kedar,
In 9.0 and 8.x documentation it was a bit clearer, but Timer service by default uses an embedded JavaDB database to store the timers. In a cluster it's not useful, so the settings are not complete, so that if you need the timer service, please manually change the corresponding pool settings to use a global database, or change the pool name to be the one you already preconfigured. Then follow the regular steps for enabling a database in a cluster.
9.1 docs has only this:
http://docs.sun.com/app/docs/doc/819-3672/6n5sj2ssd?l=en&a=view&q=TimerPool
Regards,
-marina
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