"iltrex" wrote : "PeterJ" wrote : You could do this: unjar all 20-some JARs into a common directory and then JAR the contents of that directory. Then you will have one JAR file which contains all the classes in the 20-some JAR files. | | that is a very good suggestion. I will make some tests right now. | thank you very much. | | I did that, and it works 100% fine on my developement Pc (windows). Then I deployed the shared lib file on the test server, that runs on linux, and jboss complains about a class not found, that is in the shared jar. Do you have any idea about the different behaviour ? I will continue to investigate on my own... Alberto View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4263905#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...