JBoss 4.0.4.GA Hibernate Exception

[sramakrishnaiah]

Hi
I am trying to upgrade jboss from 4.0.2 to 4.0.4.GA and I copied the ehcache 1.2 as per release notes but seems like ehcache is causing some issues. I get the following exception while starting the jboss server.

10:09:57,437 WARN [ConfigurationFactory] No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/C:/
installed/jboss-4.0.4.GA/server/gts/lib/ehcache-1.2.jar!/ehcache-failsafe.xml
10:09:57,437 INFO [HibernateServiceMBean] Could not build SessionFactory using the MBean classpath - will try again using client classpath: Attempt t
o restart an already started EhCacheProvider. Use sessionFactory.close() between repeated calls to buildSessionFactory. Consider using net.sf.ehcache
.hibernate.SingletonEhCacheProvider. Error from ehcache was: Cannot parseConfiguration CacheManager. Attempt to create a new instance of CacheManager
using the diskStorePath "C:\DOCUME~1\sramakri\LOCALS~1\Temp\" which is already used by an existing CacheManager. The source of the configuration was
classpath.




Caused by: org.hibernate.cache.CacheException: Attempt to restart an already started EhCacheProvider. Use sessionFactory.close() between repeated cal
ls to buildSessionFactory. Consider using net.sf.ehcache.hibernate.SingletonEhCacheProvider. Error from ehcache was: Cannot parseConfiguration CacheM
anager. Attempt to create a new instance of CacheManager using the diskStorePath "C:\DOCUME~1\sramakri\LOCALS~1\Temp\" which is already used by an exi
sting CacheManager. The source of the configuration was classpath.
at org.hibernate.cache.EhCacheProvider.start(EhCacheProvider.java:133)
at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:180)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1213)
at org.hibernate.jmx.HibernateService.buildSessionFactory(HibernateService.java:64)
at org.hibernate.jmx.SessionFactoryStub.getImpl(SessionFactoryStub.java:82)
at org.hibernate.jmx.SessionFactoryStub.getCurrentSession(SessionFactoryStub.java:78)

Any help or tips would be appreciated.

Thanks
Suresh

[sramakrishnaiah]

found the problem, there were multiple copy of the ehcache jars

[sramakrishnaiah]

Actually the problem still exists, In Jboss 4.0.4 GA jboss-hibernate.deployer folder has been removed and there is no indication of this in the release notes, any reason why? what is the alternate way to deploy hibernate in jboss?

[duffcase]

I had the exact same problem. I believe it is a bug, or something anyway that keeps hibernate from closing the sessionfactory whenever applications are redeployed.
I ended up rewriting the use of the sessionfactory as a mbean.

http://docs.jboss.org/jbossas/jboss4guide/r5/html/ch13.html

Although I didnt get the error when starting the jboss server, this approach might help you.

[sramakrishnaiah]

I have the MBean for 3 datasources and I just want to deploy the jars as it was in 4.0.2, but the har deployer folder has been removed since then. I tried copying over the server\deploy\jboss-hibernate.deployer from 4.0.2 to 4.0.4 and update the jars to latest releases but I am getting exception as,

org.hibernate.cache.CacheException: Attempt to restart an already started EhCacheProvider.

This happens when hibernate loads the configuration files for each of the datasources, it loads fine for first mbean and then when it tries to load for 2nd and 3rd the ehcache seems to cause exceptions.