Default transaction factory in EJB3 environment

alesj · **Posted:** Tue Nov 15, 2005 12:00 pm

Hibernate version: 3.1

I'm using EJB3 with JBossAS4.0.3.

How come CMTTransactionFactory isn't set by default in persistence.properties inside EJB3 deployer.

By default you get JDBCTransactionFactory. Is this one appropriate for session beans?

Or should I use JTATransactionFactory?

How to decide? :-)

Rgds, Ales

alesj · **Posted:** Wed Nov 16, 2005 7:27 am

Did some reading, this is what I found:

- http://docs.jboss.org/ejb3/app-server/H ... ansactions

Quote:

Note that you should choose org.hibernate.transaction.JTATransactionFactory in a BMT session bean, and org.hibernate.transaction.CMTTransactionFactory in a CMT session bean, when you configure Hibernate's transaction factory. Remember to also set org.hibernate.transaction.manager_lookup_class.

- http://www.hibernate.org/hib_docs/v3/re ... figuration

Quote:

hibernate.transaction.flush_before_completion If enabled, the session will be automatically flushed during the before completion phase of the transaction. (Very useful when using Hibernate with CMT.)

eg. true | false
hibernate.transaction.auto_close_session If enabled, the session will be automatically closed during the after completion phase of the transaction. (Very useful when using Hibernate with CMT.)

eg. true | false