jboss-4.0.3SP1 LinkageError loader constraint violation

[domi57]

Hi,

The error i get is driving me crazy....

I compile sources with jdk1.6, everything is fine.

The app deploys OK, i can enter some pages.

When i enter one page i get the error:

java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/web/tomcat/tc5/WebAppClassLoader) previously initiated loading for a different type with name "pl/akonet/zpk/raporty/bean/RaportBean"
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
java.lang.ClassLoader.defineClass(ClassLoader.java:616)
.
.
.

I was googling a lot and didn't found any anwer that could solve my problem.
I checked that the class WebAppClassLoader is in two jars: catalina.jar and tomcat55-service.jar.
I think that it's the problem, but i cannot remove any of this jars because app won't start at all.
In WEB-INF/lib i don't have any jars.

Where can i search to solve the problem ?
Can anybody help me please ?

Dominik

[jaikiran]

You should check whether there are multiple jars containing pl/akonet/zpk/raporty/bean/RaportBean class. By the way, any specific reason why you are using such a old JBoss AS version?

[domi57]

Thanks man a lot. You were right.

I'm using such old version of jboss cause app is running there for a long time

and i'm about to do some changes only.

Thanks again for your help.

Dominik