I have an object is loaded in the hibernate session and not modified, and I get this error when the object is loaded again and deleted. I thought that if the object had been modified the first time, any further change would give this error but that isn't the case for me.
I saw the related question Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session but it's not clear whether this error is thrown even if the first object in the session is not modified before the second change.
