Status: Resolved (View Workflow)
Resolution: Out of Date
Affects Version/s: AS 4.2.2.GA, AS 5.0.0.Beta4
Fix Version/s: None
The default EJB timer service used by the EJB3 layer is based on
org.jboss.ejb3.timerservice.jboss.JBossTimerServiceFactory which delegates
to the standard org.jboss.ejb.txtimer.EJBTimerService.
For EJB3 beans using the EJB timer service the thread local pool should not be used.
Since the current EJB timer service creates a new thread for each timer being created, the
thread local pool will create a matching instance of the bean for that thread. Thus the number
of active instances in total can effectively grow unchecked and thus an OOM will occur.