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From David Jencks <>
Subject Re: Developing a MessageDrivenBean
Date Tue, 22 May 2007 15:25:23 GMT
I am not really an mdb/jms expert.... so there may be a way to do  
this with acknowledgements.  However one sure way to do this is with  
transactional delivery.   If the mdb can't process the message it can  
call setRollbackOnly on the MessageDrivenContext.  According to what  
I've heard this is likely to be significantly slower than non- 
transactional delivery.

david jencks

On May 22, 2007, at 4:43 AM, Jochen Zink wrote:

> Hello,
> I have a simple MDB which works as a JMSReceiver. The MDB  
> subscribes to a JMS-Topic. Everything works fine. If a new message  
> is published to the Topic, the MDBs onMessage Method is called.
> I want, that the bean can receive the same message over again, If  
> an error inside the bean is raised. Normally I can deal with  
> "jmsmessage.acknowledge();" Method to notify, that the reciever  
> handled the message correctly. If an error is raised on the  
> receivers side, no acknowledge() is called. Normally in this case I  
> expected, the message would send over again. But not with a MDB. It  
> does not matter if I call acknowledge or not. The MDB creates the  
> JMSSession where I can configure, that the session runs in  
> What musst I do to get this behavior?
> I want, that the messageDrivenBean can say, that everything is  
> correct and the message can be deleted from the topic if all  
> subscibers have it received. But if the Bean raised an error, it  
> should be possible for the bean, to receive the same message over  
> again after a while.
> Maybe it is only configuration stuff. But I can't find infos on  
> activeMQ or openEJB Homepage.
> Can someone help me?
> thanks!
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