Surprising , Can you please verify if the oracle.jdbc.driver.OracleDriver is present in the ojdbc14.jar ? If it is present then perform the following steps to trouble shoot the problem 1) Configure the Oracle DS by making the changes in the oracle-ds.xml file and drop it in the deply directory . 2) Copy the driver related jar file in the server\default\lib folder. 3) Write a simple jsp which would try to get this connection. Also make sure that you restart Jboss if you have copied the driver related jar and configured oracle ds file while the Server was running . View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046428#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...