Unable to connect user management
We are using ECC6 on windows plateform with oralce database . was java is connecting perfectly but while opening user management . followin error message is comming .
503 Service Unavailable
SAP J2EE Engine/7.00
Application cannot be started.
Details: com.sap.engine.services.deploy.container.ExceptionInfo: Naming error.
Visual Administrator is also not connecting .
Pl. suggest .