M.allam, Please post the entire console logs (starting from the run.bat command echo statements). Also do this - In %JBOSS_HOME%\server\default\lib folder, there's a jboss-common-jdbc-wrapper.jar. Open this jar file and see what folder is present under org\jboss\resource\adapter\jdbc. Inside this, is the sub-folder named jdk5 or is it named jdk6? Just want to make sure that you have downloaded the correct version of JBoss for JDK5. Alternately, you can use set JAVA_HOME to point to JDK6 and start JBoss. See if that works fine. While posting the logs or xml content or code, remember to wrap it in a code block using the Code button in the message editor window and please hit the Preview button to make sure your post is correctly formatted View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4176811#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...