Using EJB Timer Service in GlassFish V3 Prelude
By Marina Vatkina on Oct 21, 2008
This is a followup to the previous entry Using EJB Timers in GlassFish V3 TP2
All steps described in that blog apply, with the exception that the war file name and location had slightly changed to be <your-installtion>/glassfish/lib/install/applications/ejb-timer-service-app.war (Note that there is now no version present in the name of the war archive).
With V3 Prelude you can now use the EJB Timer Service with the Embedded JavaDB database, as had been available in all prior releases of GlassFish and Sun Application server.
To do so, just install JTS package from the Update Center and restart the server. You need JTS support because the __TimerPool is configured to use XA resources.