Try this - Assuming the database server is dbsqlserver and the instance name is devenv, port is 1433 and database name is userscdb then the url should look like: <connection-url>jdbc:microsoft:sqlserver://dbsqlserver;devenv:1433;databaseName=userscdb</connection-url> Note the semi-colon between dbsqlserver and devenv. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059396#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...