hi all,
The problem presented to me is:
In my program I use hibernate3 with proxool. when using createsqlquery operations are performed perfectly, but when I use to use HQL CreateQuery not work, showing exception to next

Session session=RegisterConnection.getSessionFactory(getSessionBean1().getUserDBCache()).openSession();
session.beginTransaction();
List result = session.createQuery("from CartCase").list();

session.getTransaction().commit();

javax.servlet.ServletException: java.lang.Exception: java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.engine.query.HQLQueryPlan

and google search but nobody has that except
Thnaks. :)
the complete exception

javax.servlet.ServletException: java.lang.Exception: java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.engine.query.HQLQueryPlan
at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:158)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.fscInt.icsLight.presentation.filter.AccessFilter.doFilter(AccessFilter.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:465)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.Exception: java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.engine.query.HQLQueryPlan
at com.icesoft.faces.context.View.servePage(View.java:152)
at com.icesoft.faces.webapp.http.core.MultiViewServer.service(MultiViewServer.java:67)
at com.icesoft.faces.webapp.http.common.ServerProxy.service(ServerProxy.java:11)
at com.icesoft.faces.webapp.http.servlet.MainSessionBoundServlet$4.service(MainSessionBoundServlet.java:149)
at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
at com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
... 17 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.engine.query.HQLQueryPlan
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623)
at com.fscInt.icsLight.presentation.managedBeans.CartCaseManaged.loadListCaseState(CartCaseManaged.java:62)
at com.fscInt.icsLight.presentation.managedBeans.CartCaseManaged.<init>(CartCaseManaged.java:54)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:185)
at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:105)
at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:368)
at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:230)
at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:86)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:61)
at org.apache.el.parser.AstValue.getValue(AstValue.java:107)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
at javax.faces.component.UIData.getValue(UIData.java:614)
at com.icesoft.faces.component.panelseries.UISeries.getValue(UISeries.java:572)
at com.icesoft.faces.component.panelseries.UISeries.getDataModel(UISeries.java:357)
at com.icesoft.faces.component.panelseries.UISeries.processCurrentRowData(UISeries.java:144)
at com.icesoft.faces.component.panelseries.UISeries.setRowIndex(UISeries.java:136)
at com.icesoft.faces.component.ext.renderkit.TableRenderer.renderFacet(TableRenderer.java:146)
at com.icesoft.faces.renderkit.dom_html_basic.TableRenderer.encodeBegin(TableRenderer.java:122)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:813)
at javax.faces.component.UIData.encodeBegin(UIData.java:967)
at com.icesoft.faces.component.panelseries.UISeries.encodeBegin(UISeries.java:298)
at com.icesoft.faces.component.ext.HtmlDataTable.encodeBegin(HtmlDataTable.java:110)
at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:356)
at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:96)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:492)
at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
at com.icesoft.faces.facelets.D2DFaceletViewHandler.renderResponse(D2DFaceletViewHandler.java:282)
at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:159)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:19)
at com.icesoft.faces.context.View$2$1.respond(View.java:48)
at com.icesoft.faces.webapp.http.servlet.ServletRequestResponse.respondWith(ServletRequestResponse.java:201)
at com.icesoft.faces.context.View$2.serve(View.java:77)
at com.icesoft.faces.context.View.servePage(View.java:149)

mmmmmm you should buy the above books for more doc in this kind of exceptions :P