AppsDataSource creation on 10.3.5 using fndext.jar

Hi, 

I am trying to create a AppsDatasource for EBS on weblogic 10.3.5,ojdbc6dms.jar using oracle note 974949.1.Atfirst,while creating I got OAUTH Marshalling error.After searching in internet I got to know that change to O3 protocol will eliminate it,I have tried it but now its throwing error  invalid username/password; logon denied.

                                                        

                                            As per documentation,the dbc file which we created is the only source through which EBS will to know whether the node is registered or not for authentication.Even if I am not specifying the dbcFile location in properties I am getting the same error.So I am thinking whether the fndext.jar is correctly getting picked up by placing it in $DOMAIN_HOME/lib