Hibernate version:[/b2.1.1...]

[b]Mapping documents:

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:

Name and version of the database you are using:[/bOracle 9i]

[b]The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:

I use Hibernate w/ NO cache as a local library in my Session EJB deployed in WebLogic 8.1 cluster. WebLogic DB Connection Pool is configured w/ minimum 5 connections for Oracle 9i. My Hibernate bootstrap code initializes SessionFactory and bind it to the JNDI.

private static
SessionFactory getSessionFactory ()
throws HibernateException, NamingException
{
if (IN_CONTAINER) {
return getSessionFactory_jndi ();
} else {
return getSessionFactory_local ();
}
// NOT REACHED
}

private static
SessionFactory getSessionFactory_jndi ()
throws NamingException, HibernateException
{
final InitialContext ctx = JNDIUtil.getInitialContext (COMPONENT_NAME);

// See if the SessionFactory is already bound in JNDI

try {
final Object obj = ctx.lookup (SESSION_FACTORY_JNDI);
return (SessionFactory) obj;
}
catch (final NamingException n_e) {
// IGNORED
}

// Create a new SessionFactory and bind it into JNDI

try {
final URL url = Thread.currentThread ().getContextClassLoader ().getResource (CONFIG_RESOURCE);
final Configuration config = new Configuration ().configure (url);
final SessionFactory factory = config.buildSessionFactory ();
ctx.bind (SESSION_FACTORY_JNDI, factory);
return factory;
}
catch (final NamingException n_e) {
logger.log (Level.SEVERE, n_e.getMessage (), n_e);
throw n_e;
}

// NOT REACHED
}

}

I send requests to the cluster ( IN_CONTAINER = true ) and Hibernate works fine on one server only; on another server I always get SessionFactory obj=null and I cannot open the Session ( wile I do have my DB Connection available ): line
final Object obj = ctx.lookup (SESSION_FACTORY_JNDI);

What is wrong ? My guess is this: when the first request reaches SessionFactory initialization, it goes fine and the object gets bound to the JNDI; in the cluster, JNDI is replicated to another server; the second request in the second server finds SessionFactory' s JNDI name and tries to get bound object; the object exists in the JVM of another server and, obviously, NULL is returned. Am I right ?

Should I avoid binding SessionFactory to the JNDI in the cluster and always treat SessionFactory as only local instance ?

Please, help me with it.

Thank you,
- Michael

Have you looked at http://www.hibernate.org/120.html ?

yes, I have. If you look into my code in the message, it uses exactly same approach. Plus, I never had a problem with single WebLogic server ( using JNDI ).
Thanks,
- Michael