JBO-25301 - accessing DBTransaction in AMImpl

Question

Hi All,
I am trying to perform some initialization when the AM is instantiated. Therefore I have
called a method from AMImpl constructor and try to access DBTransaction .
The following exception is thrown when we try to access DBTransaction.
Exception :
Exception : oracle.jbo.InvalidOwnerException: JBO-25301: Application module TestAMImpl_30 is not a root app module but has no parent
Sample Code :
public class TestAMImpl extends ApplicationModuleImpl {
     public TestAMImpl() {
     super();
     initMethod();
     public void initMethod(){
          DBTransaction dbTransaction = getDBTransaction(); // Exception is thrown
}

Answer 1

This won't work. As a rule you should not use the constructor for accessing a transaction as there is none at this point in the life cycle of the (root) am.
Check out this post {thread:id=2353163} which should help you to fine the right method to overwrite (I guess onAfterConnect() or onPrepareSession() are candidates).
Timo