[jboss-user] [EJB 3.0] - Timer Error intermittently killing my site

modoc do-not-reply at jboss.com
Mon Nov 27 17:46:19 EST 2006

I have an application which is using Seam and Jboss 4.0.5.  I have a timer (setup through seam, don't ask me how), which every 20 seconds checks an imap account, loads any new e-mail in, and then processes them.

  |     @Asynchronous
  |     @Transactional
  |     public void processEmailsRecurring(@Expiration
  |     Date pDate, @IntervalDuration
  |     long pInterval) {
  |         mLog.info("proccessEmailsReccurring running...");
  |         this.mEmailManager.processNewEmails(mIMAPClient.getNewMessages());
  |     }

This works perfectly for days or hours.  Then it starts dying.  The mIMAPClient.getNewMessages() gets called, but before the processNewEmails is called, this error shows up in the logs:

  | ERROR [org.jboss.ejb.txtimer.TimerImpl] Error invoking ejbTimeout: javax.ejb.EJBException: java.lang.NullPointerException

It then does that (getNewMessages(), ERROR, end) every 20 seconds.  Once I notice that the site has died, I can go in and flush out the mail spool, and that seems to "fix" it for a time.

What could be causing the ERROR [org.jboss.ejb.txtimer.TimerImpl] Error invoking ejbTimeout: javax.ejb.EJBException: java.lang.NullPointerException?

I've tried to back track through the jboss source, but there is so many layers and injection and such, that I have no idea where it is coming from, or why it only happens sometimes, or how I can fix it.

Any ideas or info would be greatly appreciated.

Thank you!


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