We are aware that the Hibernate SessionFactory attempts to obtain a Connection during its construction in order to query the JDBC metadata, yes.
I think you may be slightly confused (it seems that way to me anyway). The connection obtained during construction of a SessionFactory has absolutely nothing to do with the connections used by sessions. On Wednesday 29 August 2007 08:29:58 am De Silva Jayasinghe, Robin wrote: > Hi! > > I am member of the team that develops JPA in SAP's Netweaver Server. > Recently we had an issue with Hibernate as a persistence provider for > JPA. > > During injection of EM/EMF into stateless session bean, our > ORPersistenceObjectFactory creates a new instance of Hibernate > EntityManagerFactory. During initialization HibernateEMF tries to get a > DB connection but at this point of time this is forbidden and an > exception is thrown. This exception is ignored from Hibernate : > > try { > Connection conn = > connections.getConnection(); > try { > ....................... > } > finally { > > connections.closeConnection(conn); > } > } > catch (SQLException sqle) { > log.warn("Could not obtain connection > metadata", sqle); > } > catch (UnsupportedOperationException uoe) { > // user supplied JDBC connections > } > > After that EMF is normally created and returned to session EJB. After > that when EM is used it check's if connection was already created and if > not creates a new one " > > public Connection getConnection() throws HibernateException { > if ( isClosed ) { > throw new HibernateException( "connection > manager has been closed" ); > } > if ( connection == null ) { > openConnection(); > } > return connection; > } > > Hibernate and the our JPA container implementation is also correct. The > only one problem is that this exception is logged during the first > request to the related application. My question to you as the > development team of Hibernate is whether you are aware of this > situation. It would be nice to have Hibernate running on our engine more > smoothly. > > Best Regards, > Robin > > _______________________________________________ > hibernate-dev mailing list > hibernate-dev@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hibernate-dev _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev