I get this error when trying to initialize the hibernate session factory in Websphere 5.1.1 I am trying to figure out what the problem is but any pointers would be helpful. I am migrating from hibernate 2.1.7 where this code and hibernate works flawlessly to hibernate 3 beta 3. I followed the migration guide and refactored the classes as explained.
What am i missing !!
Thanks
Jennifer.

Hibernate version: hibernate3b3

Full stack trace of any exception that occurs:

[2/11/05 11:26:12:921 EST] 18a118a1 WebGroup E SRVE0020E: [Servlet Error]-[SetUpHibernateServlet]: Failed to load servlet: java.lang.LinkageError: LinkageError while defining class: org.hibernate.HibernateException
Could not be defined due to: (org/hibernate/HibernateException) bad major version at offset=6
This is often caused by having a class defined at multiple
locations within the classloader hierarchy. Other potential causes
include compiling against an older or newer version of the class
that has an incompatible method signature.
Dumping the current context classloader hierarchy:
==> indicates defining classloader
==>[0]
com.ibm.ws.classloader.CompoundClassLoader@54065406
Local ClassPath: D:\workspaceatlas_old\atlas\WebContent\WEB-INF\classes;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\antlr.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\avalon-framework-cvs-20020806.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\batik.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\cglib-full-2.0.2.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\commons-beanutils.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\commons-collections.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\commons-digester.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\commons-fileupload.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\commons-lang.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\commons-logging.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\commons-validator.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\concurrent.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\dom4j-1.5.2.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\ehcache-1.1.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\fop.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\hibernate3.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\jakarta-oro.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\jaxen-full.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\JCache-1.0a5.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\jdom.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\jstl.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\junit.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\log4j-1.2.9.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\odmg-3.0.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\ojdbc14.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\poi-2.5.1-final-20040804.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\saxpath.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\standard.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\struts.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\taglibs-datetime.jar;D:\workspaceatlas_old\atlas\WebContent\WEB-INF\lib\taglibs-log.jar;D:\workspaceatlas_old\atlas\WebContent;
Delegation Mode: PARENT_FIRST
[1] com.ibm.ws.classloader.JarClassLoader@983055000 Local Classpath: Delegation mode: PARENT_FIRST
[2] com.ibm.ws.classloader.ExtJarClassLoader@980433520 Local ClassPath: D:\Program Files\IBM\Application Developer512\runtimes\base_v51\lib\app; Delegation Mode: PARENT_LAST
[3] com.ibm.ws.classloader.ProtectionClassLoader@67f067f
[4] com.ibm.ws.bootstrap.ExtClassLoader@18181818
[5] sun.misc.Launcher$AppClassLoader@5ab05ab0
[6] sun.misc.Launcher$ExtClassLoader@6ad06ad
---Original exception---
java.lang.UnsupportedClassVersionError: (org/hibernate/HibernateException) bad major version at offset=6
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:211)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:147)
at com.ibm.ws.classloader.CompoundClassLoader._defineClass(CompoundClassLoader.java:446)
at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java:396)
at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:300)
at java.lang.ClassLoader.loadClass(ClassLoader.java:560)
at java.lang.Class.verifyImpl(Native Method)
at java.lang.Class.verify(Class.java:253)
at java.lang.Class.initialize(Class.java:315)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1481)
at java.beans.Beans.instantiate(Beans.java:219)
at java.beans.Beans.instantiate(Beans.java:63)
at com.ibm.ws.webcontainer.webapp.WebAppServletManager.loadServlet(WebAppServletManager.java:188)
at com.ibm.ws.webcontainer.webapp.WebAppServletManager.loadAutoLoadServlets(WebAppServletManager.java:542)
at com.ibm.ws.webcontainer.webapp.WebApp.loadServletManager(WebApp.java:1279)
at com.ibm.ws.webcontainer.webapp.WebApp.init(WebApp.java:283)
at com.ibm.ws.webcontainer.srt.WebGroup.loadWebApp(WebGroup.java:392)
at com.ibm.ws.webcontainer.srt.WebGroup.init(WebGroup.java:211)
at com.ibm.ws.webcontainer.WebContainer.addWebApplication(WebContainer.java:1005)
at com.ibm.ws.runtime.component.WebContainerImpl.install(WebContainerImpl.java:136)
at com.ibm.ws.runtime.component.WebContainerImpl.start(WebContainerImpl.java:356)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:505)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:808)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:354)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:578)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:299)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:256)
at com.ibm.ws.runtime.component.ContainerImpl.startComponents(ContainerImpl.java:536)
at com.ibm.ws.runtime.component.ContainerImpl.start(ContainerImpl.java:413)
at com.ibm.ws.runtime.component.ApplicationServerImpl.start(ApplicationServerImpl.java:152)
at com.ibm.ws.runtime.component.ContainerImpl.startComponents(ContainerImpl.java:536)
at com.ibm.ws.runtime.component.ContainerImpl.start(ContainerImpl.java:413)
at com.ibm.ws.runtime.component.ServerImpl.start(ServerImpl.java:243)
at com.ibm.ws.runtime.WsServer.start(WsServer.java:128)
at com.ibm.ws.runtime.WsServer.main(WsServer.java:225)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
at java.lang.reflect.Method.invoke(Method.java:391)
at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:189)
at com.ibm.etools.websphere.tools.runner.api.ServerRunnerV5$1.run(ServerRunnerV5.java:97)

--- end Original exception----

at com.ibm.ws.classloader.CompoundClassLoader._defineClass(CompoundClassLoader.java:491)
at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java:396)
at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:300)
at java.lang.ClassLoader.loadClass(ClassLoader.java:560)
at java.lang.Class.verifyImpl(Native Method)
at java.lang.Class.verify(Class.java:253)
at java.lang.Class.initialize(Class.java:315)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1481)
at java.beans.Beans.instantiate(Beans.java:219)
at java.beans.Beans.instantiate(Beans.java:63)
at com.ibm.ws.webcontainer.webapp.WebAppServletManager.loadServlet(WebAppServletManager.java:188)
at com.ibm.ws.webcontainer.webapp.WebAppServletManager.loadAutoLoadServlets(WebAppServletManager.java:542)
at com.ibm.ws.webcontainer.webapp.WebApp.loadServletManager(WebApp.java:1279)
at com.ibm.ws.webcontainer.webapp.WebApp.init(WebApp.java:283)
at com.ibm.ws.webcontainer.srt.WebGroup.loadWebApp(WebGroup.java:392)
at com.ibm.ws.webcontainer.srt.WebGroup.init(WebGroup.java:211)
at com.ibm.ws.webcontainer.WebContainer.addWebApplication(WebContainer.java:1005)
at com.ibm.ws.runtime.component.WebContainerImpl.install(WebContainerImpl.java:136)
at com.ibm.ws.runtime.component.WebContainerImpl.start(WebContainerImpl.java:356)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:505)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:808)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:354)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:578)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:299)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:256)
at com.ibm.ws.runtime.component.ContainerImpl.startComponents(ContainerImpl.java:536)
at com.ibm.ws.runtime.component.ContainerImpl.start(ContainerImpl.java:413)
at com.ibm.ws.runtime.component.ApplicationServerImpl.start(ApplicationServerImpl.java:152)
at com.ibm.ws.runtime.component.ContainerImpl.startComponents(ContainerImpl.java:536)
at com.ibm.ws.runtime.component.ContainerImpl.start(ContainerImpl.java:413)
at com.ibm.ws.runtime.component.ServerImpl.start(ServerImpl.java:243)
at com.ibm.ws.runtime.WsServer.start(WsServer.java:128)
at com.ibm.ws.runtime.WsServer.main(WsServer.java:225)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
at java.lang.reflect.Method.invoke(Method.java:391)
at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:189)
at com.ibm.etools.websphere.tools.runner.api.ServerRunnerV5$1.run(ServerRunnerV5.java:97)


Name and version of the database you are using:

Oracle 9i

Aha nevermind I found a post that explains this

http://forum.hibernate.org/viewtopic.php?t=938305

Sorry for the touble

<quote>PAMHO</quote>

Jennifer