Atomikos Forum

I have a setup with hibernate+JPA+atomikos. I have configured this setup according to the atomikos documentation. However, I found that the session wasn't flushed on completion of a transaction. A manual flush of the JPA EntityManager solves the problem, but this is not something you want to do at all times.

After a long google I found this topic on your forum:

default82df.html?community.6.1085.2#discussTopic1086

And that solved the problem! So, when you don't define your datasource as a jta-datasource in your persistence.xml you have to add the following two items:

<entry key="javax.persistence.transactionType" value="jta"/>
<entry key="hibernate.transaction.factory_class" value="org.hibernate.ejb.transaction.JoinableCMTTransactionFactory"/>

I made here a new forum topic because I hope this one googles quicker to the solution. Also, I want to stress that setting "javax.persistence.transactionType" is also crucial, which was not directly mentioned in the original topic. And finally, I would like to invite the atomikos engineers to include this in the standard documentation. Unless, I am missing something of course, but I have tried just about everything and this came up as the only working solution.

This is already known. Look at the wiki here and read:

http://www.atomikos.com/Documentation/HibernateIntegration#With_JPA

There you find this link:

http://docs.jboss.org/hibernate/stable/entitymanager/reference/en/html/transactions.html#transactions-demarcation-jta

So its already documented. Reading the forums there is already a thread about this here:

default82df.html?community.6.1436.11

Well, I didn't find the exact configuration I described in any of the links you propose here. So I think my post is justified and one might think about adding it to the wiki.