Hi,
I am using Jboss Server, Postgres as database, hibernate and JBPM .
When deploying my web application as war file.

During deployment of application error is coming like Driver class is not found while the jar for Postgres Driver is inside web-inf/lib directory of war.

When I am puting c3p0.jar, postgres.jar, and hibernate2.1.1.jar in
Jboss-4.0.0/server/default/lib then my application is running properly.

Can you help me, why this error is coming and how to resolve this problem, So without putting jars in Jboss-4.0.0/server/default/lib my application can run.
Regards,
Abhaya