Message Driven Bean and Distributed transaction

Question

Hi ALL
I am developing an asynchronous application using MDB. My application flow is as follows:
1. From MDB onMessage i am calling a method MethodA that
a. calls a simple pojo1 where I am getting a Connection on XA enable datasource1 and executing Stored Procedure1 of DatabaseSchema1.
b. In that pojo without committing m closing the connection and coming back in MethodA.
c. Again from MethodA m calling a different pojo2 where I am getting a new Connection on XA enable datasource2 and executing Stored Procedure2 of
DatabaseSchema1. In this pojo also without committing m closing the connection and coming back in MethodA.
d. Again from MethodA m calling pojo1 where I am getting a new Connection on XA enable datasource1 and executing a different function of Stored Procedure1 of DatabaseSchema1.
Public class MDB{
Public void onMessage(��.)
Try{
Method1();
Catch(Exception x)
mdbcontext.setRollbackOnly();
Private void MethodA()
Call pojo1;
Call pojo2
Pojo1
Public void CallSP1()
Get connection from Datasource1 (shema1,user1, pwd1);
Call sp1();
//return without commit;
Pojo2
Public void CallSP2()
Get connection from Datasource2 (shema1,user2, pwd2);
Call sp2();
//return without commit;
SP1:
Insert table1
Savepoint 1
Insert into Table1
Rollback to 1
Insert a row
End SP1 (without commit)
SP2:
Insert table2
Savepoint 2
Update table2
Rollback to 2
Insert table2
End SP2 (without commit)
In ejb-jar.xml
Transaction type is Container
Transaction attribute is Required for all
Now problem is:
Case 1: success case when no exception is there at Java layer
SP1 works fine I mean there is only 2 inserts in Table 1
But In SP2 there are 3 inserts
Case 2: if an exception comes at Java layer
SP1 is fine
Rollback is not happening in SP2
In ejb-jar.xml transaction attributes is Required for all methods and transaction type is Container.
Backend is Oracle 10g and init.xa has already been run on that.
Will be very obliged if can have a single hint of the problem.
Both datasource are XA enable
Backend is Oracle 10g
Application server is WAS 6.0
Queue is WAS MQ 6.0
Thanks

Answer 1

{color:#008000}Hi Friends,
Thought of updating the answers for my questions in case somebody else would find it helpful.
{color}
{color:#999999}{color:#00ccff}I'm trying to make message driven bean and use the OnListener method.
But since I'm doing this for the first time I have very limited knowledge.
The following are my doubts :
1. Should I have a main function while using the MDB?{color}
{color:#008000} There is no need for any main function.{color}
{color:#00ccff}2. Is it mandatory to have JNDI setup done?
{color} {color}{color:#008000} There is no need for any JNDI setup done. But you need to configure the details on the
Websphere by creating valid entries inside Resources namely -
Queue Connection Factory, Queues and Listener Ports under the server.
Thanks,
Arun Prithviraj{color}