How to migrate my application from jboss-3.0.3_tomcat-4.1.12 to jboss-3.0.8_tomcat-4.1.24?
There are some serious problems in my application under jboss-3.0.3_tomcat-4.1.12. As the jboss throws some Jasper and Catalina Exceptions. Though I can update those packages, I think the system would not be stable. So i want to migrate server to jboss-3.0.8_tomcat-4.1.24. Though I change the configuration of my application in JBuilder and reploy the application to the new server, the system throws "Problem starting service jboss.j2ee:jndiName=TblConsignListItem,service=EJB java.lang.NullPointerException". I am sure the old one would not throw this exception. Who can tell me what is the problem with my application and jboss-3.0.8_tomcat-4.1.24? What should I do?