I am working with a simple web application using spring. I'm not sure if the problem I am having is a hibernate problem or a DBCP problem.
Has anyone encountered this error? If so, how did you resolve it?
Any help would be appreciated. Thanks.
Here is the error:

org.hibernate.transaction.JDBCTransaction :198 - Could not toggle autocommit
java.sql.SQLException: Closed Connection
at oracle.jdbc.driver.DatabaseError.throwSqlException (DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException (DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException (DatabaseError.java:208)
at oracle.jdbc.driver.PhysicalConnection.setAutoCommi t(PhysicalConnection.java:1057)
at org.apache.commons.dbcp.DelegatingConnection.setAu toCommit(DelegatingConnection.java:268)
at org.apache.commons.dbcp.PoolingDataSource$PoolGuar dConnectionWrapper.setAutoCommit(PoolingDataSource .java:293)
at org.hibernate.transaction.JDBCTransaction.toggleAu toCommit(JDBCTransaction.java:194)
at org.hibernate.transaction.JDBCTransaction.commitAn dResetAutoCommit(JDBCTransaction.java:142)
at org.hibernate.transaction.JDBCTransaction.commit(J DBCTransaction.java:115)
at org.springframework.orm.hibernate3.HibernateTransa ctionManager.doCommit(HibernateTransactionManager. java:575)
at org.springframework.transaction.support.AbstractPl atformTransactionManager.processCommit(AbstractPla tformTransactionManager.java:662)
at org.springframework.transaction.support.AbstractPl atformTransactionManager.commit(AbstractPlatformTr ansactionManager.java:632)
at org.springframework.transaction.interceptor.Transa ctionAspectSupport.commitTransactionAfterReturning (TransactionAspectSupport.java:314)
at org.springframework.transaction.interceptor.Transa ctionInterceptor.invoke(TransactionInterceptor.jav a:117)
at org.springframework.aop.framework.ReflectiveMethod Invocation.proceed(ReflectiveMethodInvocation.java :166)
at org.springframework.aop.framework.JdkDynamicAopPro xy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy44.toString(Unknown Source)
at com.sun.faces.config.ManagedBeanFactoryImpl.getCon vertedValueConsideringPrimitives(ManagedBeanFactor yImpl.java:947)
at com.sun.faces.config.ManagedBeanFactoryImpl.setPro pertiesIntoBean(ManagedBeanFactoryImpl.java:664)
at com.sun.faces.config.ManagedBeanFactoryImpl.newIns tance(ManagedBeanFactoryImpl.java:345)
at com.sun.faces.application.ApplicationAssociate.cre ateAndMaybeStoreManagedBeans(ApplicationAssociate. java:542)
at com.sun.faces.el.ManagedBeanELResolver.getValue(Ma nagedBeanELResolver.java:83)
at javax.el.CompositeELResolver.getValue(CompositeELR esolver.java:53)
at com.sun.faces.el.FacesCompositeELResolver.getValue (FacesCompositeELResolver.java:58)
at org.apache.el.parser.AstIdentifier.getValue(AstIde ntifier.java:61)
at org.apache.el.ValueExpressionImpl.getValue(ValueEx pressionImpl.java:186)
at com.sun.facelets.el.TagValueExpression.getValue(Ta gValueExpression.java:71)
at org.apache.el.parser.AstIdentifier.getValue(AstIde ntifier.java:57)
at org.apache.el.parser.AstValue.getValue(AstValue.ja va:103)
at org.apache.el.ValueExpressionImpl.getValue(ValueEx pressionImpl.java:186)
at com.sun.facelets.el.TagValueExpression.getValue(Ta gValueExpression.java:71)
at javax.faces.component.UIData.getValue(UIData.java: 577)
at javax.faces.component.UIData.getDataModel(UIData.j ava:1056)
at javax.faces.component.UIData.setRowIndex(UIData.ja va:417)
at javax.faces.component.UIData.iterate(UIData.java:1 124)
at javax.faces.component.UIData.processDecodes(UIData .java:929)
at javax.faces.component.UIComponentBase.processDecod es(UIComponentBase.java:1007)
at javax.faces.component.UIComponentBase.processDecod es(UIComponentBase.java:1007)
at javax.faces.component.UIViewRoot.processDecodes(UI ViewRoot.java:499)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.ex ecute(ApplyRequestValuesPhase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.phase(Lifecy cleImpl.java:266)
at com.sun.faces.lifecycle.LifecycleImpl.execute(Life cycleImpl.java:132)
at javax.faces.webapp.FacesServlet.service(FacesServl et.java:244)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
at org.apache.myfaces.trinidadinternal.webapp.Trinida dFilterImpl._invokeDoFilter(TrinidadFilterImpl.jav a:238)
at org.apache.myfaces.trinidadinternal.webapp.Trinida dFilterImpl._doFilterImpl(TrinidadFilterImpl.java: 195)
at org.apache.myfaces.trinidadinternal.webapp.Trinida dFilterImpl.doFilter(TrinidadFilterImpl.java:138)
at org.apache.myfaces.trinidad.webapp.TrinidadFilter. doFilter(TrinidadFilter.java:92)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:70)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
at org.apache.myfaces.webapp.filter.ExtensionsFilter. doFilter(ExtensionsFilter.java:147)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
at org.acegisecurity.util.FilterChainProxy$VirtualFil terChain.doFilter(FilterChainProxy.java:265)
at org.acegisecurity.intercept.web.FilterSecurityInte rceptor.invoke(FilterSecurityInterceptor.java:107)
at org.acegisecurity.intercept.web.FilterSecurityInte rceptor.doFilter(FilterSecurityInterceptor.java:72 )
at org.acegisecurity.util.FilterChainProxy$VirtualFil terChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.ui.ExceptionTranslationFilter.do Filter(ExceptionTranslationFilter.java:166)
at org.acegisecurity.util.FilterChainProxy$VirtualFil terChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.providers.anonymous.AnonymousPro cessingFilter.doFilter(AnonymousProcessingFilter.j ava:125)
at org.acegisecurity.util.FilterChainProxy$VirtualFil terChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.context.HttpSessionContextIntegr ationFilter.doFilter(HttpSessionContextIntegration Filter.java:249)
at org.acegisecurity.util.FilterChainProxy$VirtualFil terChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.util.FilterChainProxy.doFilter(F ilterChainProxy.java:149)
at org.acegisecurity.util.FilterToBeanProxy.doFilter( FilterToBeanProxy.java:98)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
at org.springframework.orm.hibernate3.support.OpenSes sionInViewFilter.doFilterInternal(OpenSessionInVie wFilter.java:198)
at org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
at *********web.SessionTimeoutFilter.doFilter(Session TimeoutFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run( JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)