connect from external tomcat to jboss fails

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Hi Forum,
an application runs well in the eclipse ide. Now I've coppied exact the same code to an servlet application.

After starting an external tomcat (it listens on port 8082) the following error occurs while processing the servlet:

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javax.naming.CommunicationException. Root exception is java.io.InvalidClassException: org.jboss.proxy.ejb.GenericEJBInterceptor; local class incompatible: stream classdesc serialVersionUID = 3844706474734439975, local class serialVersionUID = 4582256576523491346
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Does anybody know, what it means and how I have to go on?

TIA
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[jonlee]

Probably the JBoss client jars you are using are not the same as those supplied with your JBoss distribution. The JVM is complaining because the class it has locally does not match the UID of the class it finds at the remote end. Check your jbossall-client.jar and so on that you have installed in Tomcat compared to those from your JBoss distribution's client directory.

[items]

Yes. This is what I tried to do.
So I've copied all the jars laying under JBoss/client to the WEB-INF/lib directory of my webproject.
But still Tomcat doesn't lookup correctly. Do you know if I have to use another dir (I also tried Tomcat/common/lib)

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[jonlee]

It should work from shared/lib. Make sure you don't have multiple copies of the libraries. Also the libraries in client have some repeated classes so including all of them may hurt your cause. Just try the jbossall-client.jar to start with and if you get any class missing issues, find the jar with that class and include that.

There used to be an issue with the transition from JDK 1.3 to 1.4 that the UIDs would be reported differently (if I remember correctly). In any case, you should probably use the same JDK for both environments and see if that changes anything.

Also make sure you only have the jars included once in all of Tomcat and your WAR - that will ensure that you don't have an old class floating around somewhere in your Tomcat install. That is the only other thing I can think of that would cause you to have two classes with different UIDs at client (Tomcat) and server (JBoss).

Hope that helps otherwise I'm out of ideas.

[items]

thanks a lot. I will try to solve the problem with your suggestions. If it works afterwards I will also give a short feedback about the reason why it fails.

bye
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