Hibernate version: 3.0
I am using jta transaction. I dont close session and I dont have transaction in my hibernate classes. I control transaction in m ejb methods:@TransactionAttribute(TransactionAttributeType.REQUIRED)

Problem: I want to load an object , change sth in it and then update it. In hibernate2 there was no problem but in hibernate3, when I do the load or get before update I get this error: "a different object with the same identifier value was already associated with the session".

How can I work with a different session to let my update works?

What is the solution?

Try using that first (the one that is already in the session) object.

Or you can get a new session out of the session factory - SessionFactory.openSession().

Perhaps it is not necessary to call update, when you already associated the object during loading. Just delete the update call. Hibernate will update it anyway, because it knows you changed it.

If that does not help, post your hashcode() and equals() please