So how do you delete the other entities? What does your code look like? I think the correct way would be to remove the relationship, first. Something like that: | // clear the relationship | // depending on your relation context you may have to call EntityManager.merge(...) | List<Event> relatedEvents = event.getRelatedEvents(); | for (Event relatedEvent : relatedEvents) | { | relatedEvent.getRelatedEvents().remove(event); | } | // on both sides! That's important! | event.setRelatedEvents(new ArrayList<Event>(0)) | // remove the event | entityManager.remove(event); | Please try it that way! View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4220175#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...