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  1. EJB 3.0
  2. EJBTHREE-1330

EJB timer service should use a thread pool to avoid OOM

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    • Icon: Bug Bug
    • Resolution: Obsolete
    • Icon: Minor Minor
    • None
    • AS 4.2.2.GA, AS 5.0.0.Beta4
    • timerservice-mk2
    • None
    • Workaround Exists
    • Hide

      Use org.jboss.ejb3.StrictMaxPool instead of org.jboss.ejb3.ThreadlocalPool.
      This will limit the total number of instances in the VM is limited to the maximum
      pool size and the OOM will not occur.

      Show
      Use org.jboss.ejb3.StrictMaxPool instead of org.jboss.ejb3.ThreadlocalPool. This will limit the total number of instances in the VM is limited to the maximum pool size and the OOM will not occur.
    • Medium

      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.

            rhn-engineering-cdewolf Carlo de Wolf
            rh-ee-galder Galder Zamarreño
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              Created:
              Updated:
              Resolved: