User development, A new message was posted in the thread "Issue specifying the &lt;jar-file&gt; in persistence.xml in JBOSS 5 on linux system": http://community.jboss.org/message/519825#519825 Author : Dragos Bobes Profile : http://community.jboss.org/people/dbobes Message: -------------------------------------------------------------- I uploaded the server.log and boot.log when the <jar-file> tag was specified without the ear information.   <jar-file>myejbmodule.jar</jar-file> -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/519825#519825