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Incompatible Class Change Error for Tibco EMS 8.0

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Posted: Sun Apr 13, 2014 8:45 pm Post subject: Incompatible Class Change Error for Tibco EMS 8.0

Novice

Joined: 30 Mar 2014
Posts: 11

I am trying to transfer message between 2 Tibco EMS queues using 2 JMS nodes. I am using the versions Tibco EMS 8.0 amd IIB. Even though the message is delivered to the output queue, my flow is getting time out saying that the output monitor emcountered an error while getting the message. java.lang.IncompatibleClassChange Error. I am using the test client in broker to test the flow.

I am able to achieve the same using Java code. Is there any bad version of jar files along with Tibco EMS 8.0 which is not compatible with other jar files?

fjb_saper

Posted: Sun Apr 13, 2014 10:45 pm Post subject:

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

If you are mixing 2 JMS providers in your flow (bridge scenario) the broker might have difficulty picking the right implementation for javax.jms.Message class...

Did you think about using distinct flows/ subflows with distinct classloaders?

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MQ & Broker admin

Posted: Mon Apr 14, 2014 3:17 am Post subject:

Novice

Joined: 30 Mar 2014
Posts: 11

Thanks for the reply. I am following the step by steps from the document at http://www.ibm.com/developerworks/websphere/library/techarticles/0610_bicheno/0610_bicheno.html. My flow looks like

JMSInputNode---JMSOutputNode.

where it is getting message from Tibco ems queue(INQ) and delivering message to another TIBCO EMS queue(OUTQ). Tibco EMS is the only JMS provider used.

fjb_saper

Posted: Mon Apr 14, 2014 4:16 am Post subject:

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

Thanks for the URL but that page is not available for me...
Have you checked which JMS implementation was chosen? May be you do need a class loader configurable service.... My guess is it still has to do with some confusion as to the implementation class of the javax.jms.Message class.

Try not using the test client but using Tibco to place and read the test messages.

_________________
MQ & Broker admin

Posted: Wed Apr 16, 2014 2:47 am Post subject:

Novice

Joined: 30 Mar 2014
Posts: 11

http://www.ibm.com/developerworks/websphere/library/techarticles/0610_bicheno/0610_bicheno.html

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