Sessions created via SessionFactory.openSession(Connection) have invalid timestamp ---------------------------------------------------------------------------------- Key: HHH-985 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-985 Project: Hibernate Core Issue Type: Bug Affects Versions: 3.0.5 Environment: 3.0.5 MySql Reporter: Patrick Casey Create Two sessions: Session s = HibHelper.getSessionFactory().openSession(); Session temp = HibHelper.getSessionFactory().openSession(s.connection()); temp is a child of s in that it's using the same connection. Session s gets a proper timestamp : 4619002056560640 Session temp gets an arbitrarily negative one: -9223372036854775808 This means that anything you do via temp will fail when it tries to use the secondary cache because every entity in the cache will fail "freshness" relative to temp's timestamp. I'd think temp should either get its own timestamp based on its creation or inherit it's parten't timestamp. The large negative default value though means I can't use a derived session and the L2 cache :(.