Application Deployment and Data Source

Question

I have a application and I am using data source for connection to database.
When I deploy to the application server, it is not taking the data source name defined in the apps server. I use the same data source name defined in the apps server.
Following is my orion-application.xml properties. Could some one tell what could be the problem or am I missing something?
******XML Properties*****
<?xml version = '1.0'?>
<!DOCTYPE orion-application PUBLIC "-//ORACLE//DTD OC4J Application runtime 9.04//EN" "http://xmlns.oracle.com/ias/dtds/orion-application-9_04.dtd">
<orion-application deployment-version="9.0.4.1.0" default-data-source="jdbc/ProdCoreDS" treat-zero-as-null="true">
     <web-module id="HR_W" path="HR_W.war"/>
     <persistence path="persistence"/>
     <principals path="principals.xml"/>
     <jazn provider="XML" location="jazn-data.xml"/>
     <log>
          <file path="application.log"/>
     </log>
     <namespace-access>
          <read-access>
               <namespace-resource root="">
                    <security-role-mapping>
                         <group name="jazn.com/administrators"/>
                    </security-role-mapping>
               </namespace-resource>
          </read-access>
          <write-access>
               <namespace-resource root="">
                    <security-role-mapping>
                         <group name="jazn.com/administrators"/>
                    </security-role-mapping>
               </namespace-resource>
          </write-access>
     </namespace-access>
</orion-application>

Answer 1

Sorry, but this can be loads of different reasons, e.g. type-o's, application property files, wrong data-source definition, etc. Can't you get any clues from standard out en standard error logs of the container?