How to manage a distribute transaction between 2 Session Beans

[warxsg]

Hi all,

I have 2 Session Beans which are deployed in 2 JBoss.

Well, each SessionBean calls an EntityBean inside to insert some data in a table.

The situation is the following:

JBoss1 -> ( SessionBean 1 calls EntityBean 1 to insert data in Database 1)

JBoss2 -> ( SessionBean 2 calls EntityBean 2 to insert data in Database 2)

Well, from JBoss1 I must call a Servlet which calls the SessionBean1 and the SessionBean2.

My purpose is to call SessionBean1 and SessionBean2 in ONE and UNIQUE Transaction.

The situation is the following:

               Servlet (deployed in JBoss1) --> | calls SessionBean1 ( deployed in JBoss1)

                                                              |

                                                              | calls SessionBean2 ( deployed in JBoss2)

The question is : How Could I propagate the Transaction from JBoss1 and JBoss2 ?

Any suggestion ?

Cheers.

                 zoster

[wdfink]

What version of JBoss do you use for both?

[warxsg]

Hi Wolf-Dieter Fink,

Thank you very much for being interested in my issue.

The JBoss1 is a JBoss 5.1

The JBoss2 is a JBoss 4.2

Thanks in advance.

Cheers.

            zoster

[wdfink]

I suppose impossible (from my experience)

First is you have to change from JTA => JTS you should read and follow JBOSS_HOME (5.1)/docs/examples/transactions/README.txt.

This will convert the configuration from JTA to JTS for you.

If I remember correct this will not work with 4.x Tx-manager.

[warxsg]

Hi Wolf-Dieter Fink,

Thanks for the reply.

I found an article about JTS.

So, If I wanted to manage Distribute Transactions between 2 JBoss, the 2 JBoss must have the same version..or at least being JBoss 5.x

Suppose that after configuring JTS in my JBoss 5.1 what's type of SessionBean should I use ?

I mean, I should use SessionBean with TransactionManagementType=BEAN or TransactionManagementType=CONTAINER ?

Moreover, in case I should use  SessionBean with TransactionManagementType=BEAN what's the TransactionAttributeType do I have to use for the methods of the Bean ?

Thank you very much.

Cheers.

              zoster

[wdfink]

In case of using Type=BEAN you have to explicit programming by your own (lookup UserTransaction, begin, commit/rollback), the annotations like Tx=REQUIRED/SUPPORTED are ignored!

Also in case of Bean managed Tx the EJB spec define to suspend a running transaction if the bean is called remote.

For that use Type=CONTAINER and set the Tx annotation that you need to the method.

Also I would recommend to use the latest 5.1 (because of bugfixes since 5.0)

[warxsg]

Hi Wolf-Dieter Fink,

just another info; if I used 2 JBoss 4.2.2 would the distribute transaction mechanism work ?

Thank very much for your posts.

Cheers.

            zoster

[wdfink]

No, only if you use two JBoss 5.1