Intially I was using DataSource configuration utility,but it resulted nothing else than errors,
Merrill suggested in this manner
Don't use Struts DataSource configuration utility. It's deprecated in later versions, so it would make your application more difficult to upgrade. It also has portability issues. I've seen instances where it worked fine in development, but didn't work when the application was ported to production.
The best practice for connecting to a JDBC DataSource in a Struts or any J2EE Web Application is to define the DataSource as a JNDI resource using your Application Server's preferred method and then using JNDI to look up the DataSource in your application code. If you're using Tomcat, this link explains how to do it.