Tomcat4.0 unable to get UserTransaction instance

[Sachin Walia]

hi,   in my project i am trying to get an instance of javax.transaction.UserTransaction in tomcat4.0 using jndi.   i have added the following tag in my server.xml for this regard as well as in web.xml as it is mentioned in the docs of tomcat4.0     <Resource name="jta/UserTransaction" auth="Container" type="javax.transaction.UserTransaction"/>   when in my JSP application i try to retrieve the instance it throws an exception on browser that says   Exception Report: javax.servlet.ServletException: Cannot create resource instance Root Cause: javax.naming.NamingException: Cannot create resource instance the code i hve written in jsp page is::    Context ctx1 = new InitialContext();  Context ctx2 = (Context)ctx1.lookup("java:comp/env");  UserTransaction ut = (UserTransaction)ctx2.lookup("jta/UserTransaction"); any idea what shud be done to mend this..   BTW i am using mysql as database and mysql's type 4 jdbc2.0 compliant driver.   please suggest its urgent..   thanks in advance,   sachin walia