seeing this when running test on master "22:34:30,288 WARN SessionFactoryImpl:1554 - HHH000008: JTASessionContext being used with JDBCTransactionFactory; auto-flush will not operate correctly with getCurrentSession() " in the method of org.hibernate.internal.SessionFactoryImpl#buildCurrentSessionContext, even there is no Environment.CURRENT_SESSION_CONTEXT_CLASS property set, it use the following logic to guess if ( canAccessTransactionManager() ) { impl = "jta"; } and org.hibernate.engine.transaction.jta.platform.internal.StandardJtaPlatformResolver#resolveJtaPlatform, if there is any JTA Impl on the classpath, the method usually returns true canAccessTransactionManager() ------------------------- Best Regards, Strong Liu <stliu at hibernate.org> http://about.me/stliu/bio