We use:

  | @MessageDriven(activationConfig = {
  |         @ActivationConfigProperty(
  |                 propertyName = "destinationType",
  |                 propertyValue = "javax.jms.Queue"
  |         ),
  |         @ActivationConfigProperty(
  |                 propertyName = "destination", 
  |                 propertyValue = "queue/trigger/Stage1EventBatchQueue"
  |         ),
  |         @ActivationConfigProperty(
  |                 propertyName = "minPoolSize",
  |                 propertyValue = "1"
  |         ),
  |         @ActivationConfigProperty(
  |                 propertyName = "maxPoolSize",
  |                 propertyValue = "1"
  |         )
  | })
  | 

in our code. I think the minPoolSize and maxPoolSize are what you are looking 
for (that works for us).

As for getting a message just once: just make sure your MDB doesn't throw any 
exceptions by catching Throwable at the top of your onMessage()?


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