I have a duplicate key exception when hibernate updates a list wich have been modificated. I have a test which reproduce it sistematically, it has 2 clasess, one mapped @oneToMany to the other. The first has a list of the second. In a transaction scope I remove one element of the list, and later I add it again, hibernate try to insert again all elements without remove them, then i have a "duplicated unique key exception" at the commit. I am geting the session through the hivetrans.hibernate3.SessionFactory I could make it run successfully geting the session programaticaly, begining and commiting the transaction manually: | cfg = AnnotationConfiguration("cfg.xml); | sf = cfg.buildSessionFactory(); | s = sf.openSession(); | Why could the hivetrans session factory make change the strategy of persist the dirty list? Thank in advance for yout help! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4137789#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...