JBO-25301: Application module ... is not a root app module but has no..

Question

Hello,
Tools:_
Jdeveloper 10.1.2
JPDK 10.1.2
ADF
Portal version 10.1.2 (repository upgrade 10.1.4)
Problem:_
I have an application that calls other application module from it's own application module. Some times it gives error (not every time):
•     JBO-29000: Unexpected exception caught: oracle.jbo.JboException, msg=JBO-29000: Unexpected exception caught: oracle.jbo.InvalidOwnerException, msg=JBO-25301: Application module FormHistoryServiceLocal is not a root app module but has no parent
•        JBO-29000: Unexpected exception caught: oracle.jbo.InvalidOwnerException, msg=JBO-25301: Application module FormHistoryServiceLocal is not a root app module but has no parent
•           JBO-25301: Application module FormHistoryServiceLocal is not a root app module but has no parent
Code that application uses to call other application module:_
public ApplicationHandler( ApplicationModule rootModule )
    try
      if(rootModule != null)
        formHistory = (FormHistoryService)rootModule.findApplicationModule(FORMHISTORYSERVICE_LOCAL);
        if(formHistory == null){
          formHistory = (FormHistoryService)rootModule.createApplicationModule( FORMHISTORYSERVICE_LOCAL, FORMHISTORYSERVICE_DEF );
        userInfoDAO.connect();
      }else System.out.println("Application Module was NULL");
    }catch(Exception e)
      e.printStackTrace();
(calls: formHistory.addToHistory())
The other application module:+
public void addToHistory( Number formId, Number status, Number type, Number userId, String event )
    FormhistoryDefImpl defImpl = (FormhistoryDefImpl)EntityDefImpl.findDefObject("com.mysite.app.Formhistory");
    FormhistoryImpl fh = (FormhistoryImpl)defImpl.CreateFormhistory( this.getDBTransaction(), new NameValuePairs() ); //************ Exception is thrown from here! ************
    fh.setFormid(formId);
    fh.setStatus(status);
    fh.setType(type);
    fh.setUserid(userId);
    fh.setEvent(event);
    oracle.jbo.domain.Date eventTimestamp = new oracle.jbo.domain.Date((new java.sql.Timestamp(new java.util.Date().getTime())));
    fh.setEventtimestamp(eventTimestamp);
    this.getTransaction().commit();
What's wrong here?
JBO description:+
JBO-25301: InvalidOwnerException
Cause: While traversing the parenthood chain for application modules, a child application module was found with no container (parent) application module.
Action: If this application has added custom business component classes, it may be that the application code is attempting to access a child application module before it is fully initialized. If this is not the case, this error probably represents some internal error in BC4J framework, in which case contact BC4J Technical Support.
How can i ensure that child application module is already initialized?

Answer 1

Anyone?