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java.lang.LinkageError: loader constraints violation....

Andreas Groscurth

Joined: Mar 08, 2004
Posts: 12

i have a war file i would like to deploy on a jboss. This war file uses Web Services to retrieve information. If I deploy it i get a

java.lang.LinkageError: loader constraints violated when linking javax/activation/DataHandler class
at $Proxy147.getUPIForAccession(Unknown Source)

searching the net it says that the activation.jar is duplicated and and thats the error. My jboss do have an activation.jar in its lib folders and I do have an activation.jar in my WEB-INF/lib. But removing mine results that jboss throws an error that

java.lang.NoClassDefFoundError: javax/activation/DataHandler

can anybody help me out what the problem is ?

I agree. Here's the link:
subject: java.lang.LinkageError: loader constraints violation....
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