[ http://jira.jboss.com/jira/browse/JBAS-1372?page=comments#action_12316732 ] Steve Ebersole commented on JBAS-1372: --------------------------------------
This will be fixed in the next release of the Hibernate integration code. The integration code will be getting upgraded to support Hibernate3. Two things we did in Hibernate3 will come into play here: 1) release connections eagerly in JTA environments (basically after every use); 2) ability to track "current" sessions (by transaction) in Hibernate itself in JTA environments. All the required changes are sitting in my local sandbox and will get commited after JBoss 4.0.2 gets released. > HIbernateContext does not work well with CachedConnectionManager > ---------------------------------------------------------------- > > Key: JBAS-1372 > URL: http://jira.jboss.com/jira/browse/JBAS-1372 > Project: JBoss Application Server > Type: Bug > Components: JCA service, Hibernate service > Versions: JBossAS-4.0.1 Final > Environment: Jboss 4.0.1 > Windows 2000 > JDK 1.5 > Reporter: janssk1 > Assignee: Steve Ebersole > > > I'm trying to use the HibernateContext to create an hibernate session that > will be automatically flushed on JTA transaction commit. This works well but > the jboss log files are getting filled with warning messages from the > CachedConnectionManager. see below for a log file > I have a simple CMT SSB that gets the hibernate session using > HibernateContext, updates an object and that' s it. My code does not do any > transaction management or explicit hibernate flush. > After the method is finished, the transaction invoker will kick in and commit > the transaction. Since the transaction contains some synchronization > listeners, these will be notified appropriatly. Two listeners are available. > One listener attached by the HibernateContext (this one will flush and close > the session) and another one added by the CachedConnectionManager. This one > will try to close the connection if it was not properly closed. When the > hibernate listener tries to close the session, the cachedconnectionmanager > will be notified that the connection is closed. This should normally remove > the connection from its internal caches and also remove the automatic close > on transaction termination from the current transaction. Since the connection > is explicity closed, it does not need to be closed implicitly anymore. > However, this does not work as expected (see the trace). A looked a bit in > the code and the problem seems to be related to the interceptor stack. In a > standard jboss installation, an ejb is configured with (among others) a > transaction interceptor followed by a cachedconnectioninterceptor. The > cachedconnectioninterceptor sets some context (metaAwareObject = bean) on the > cachedconnectionmanager. However, in the finally block of the transaction > interceptor, the cachcedconnection interceptor is already finished and the > context is no longer available. This explains the 'Trying to return an > unknown connection' exception. The 'Closing connection for you' message is > related (i think) to the fact that the current transaction is no longer > active when the cachedconnection manager is notified of the connection close. > It the transaction is not active anymore, the cachedconnection manager does > not remove the automatic close on transaction termination. So after the > hibernate listener is finshed (connection closed), the other listener > attached by the cached connection manager kicks in and closes it once more. > I was able to get rid of all the (unnecessary) warning by simply removing the > cached connection interceptor. However, i would like to keep it since it > provides me basic stupidy protection. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - If you want more information on JIRA, or have a bug to report see: http://www.atlassian.com/software/jira ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ JBoss-Development mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jboss-development
