Hello,

I m new to hibernate. I m getting this error , anybody can help me?

(jdbc.AbstractBatcher 206 ) exception clearing maxRows/queryTimeout
java.sql.SQLException: You can't operate on a closed Statement!!!
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:65)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.getMaxRows(NewProxyPreparedStatement.java:1206)
at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:202)
at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:141)
at org.hibernate.loader.Loader.doQuery(Loader.java:416)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:210)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1312)
at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:116)
at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:101)
at org.hibernate.persister.entity.BasicEntityPersister.load(BasicEntityPersister.java:2461)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:350)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:331)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:113)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:75)
at org.hibernate.impl.SessionImpl.immediateLoad(SessionImpl.java:639)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:59)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:84)
at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:134)
at com.meteksan.kgm.itpim.butce.pojo.MuhasebeBirimi$$EnhancerByCGLIB$$735d4e29.getEklemeTarihi(<generated>)
at com.meteksan.kgm.genel.form.BaseForm.<init>(BaseForm.java:69)
at com.meteksan.kgm.itpim.butce.baseForm.MuhasebeBirimiForm.<init>(MuhasebeBirimiForm.java:46)
at com.meteksan.kgm.itpim.butce.baseForm.HarcamaBirimiForm.<init>(HarcamaBirimiForm.java:85)
at com.meteksan.kgm.iskm.ambar.baseForm.AmbarForm.<init>(AmbarForm.java:173)
at com.meteksan.kgm.sam.baseForm.TalepFisiForm.<init>(TalepFisiForm.java:301)
at com.meteksan.kgm.sam.BD.TalepFisiBD.araTalepFisiById(TalepFisiBD.java:111)
at com.meteksan.kgm.sam.action.yaklasikMaliyet.FirmaEkleSayfaAction.executeAction(FirmaEkleSayfaAction.java:91)
at com.meteksan.kgm.genel.action.GenelAction.execute(GenelAction.java:86)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
at tr.com.meteksan.web.filter.LoginFilter.doFilter(LoginFilter.java:225)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at tr.com.meteksan.web.filter.EncodingFilter.doFilter(EncodingFilter.java:144)
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: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.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.maybeDirtyTransaction(NewProxyPreparedStatement.java:2069)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.getMaxRows(NewProxyPreparedStatement.java:1198)
... 56 more
(hibernate.AssertionFailure 22 ) an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session)
org.hibernate.AssertionFailure: possible non-threadsafe access to the session
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:90)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:510)
at org.hibernate.loader.Loader.doQuery(Loader.java:419)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:210)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1312)
at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:116)
at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:101)
at org.hibernate.persister.entity.BasicEntityPersister.load(BasicEntityPersister.java:2461)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:350)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:331)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:113)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:75)
at org.hibernate.impl.SessionImpl.immediateLoad(SessionImpl.java:639)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:59)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:84)
at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:134)
at com.meteksan.kgm.itpim.butce.pojo.MuhasebeBirimi$$EnhancerByCGLIB$$735d4e29.getEklemeTarihi(<generated>)
at com.meteksan.kgm.genel.form.BaseForm.<init>(BaseForm.java:69)
at com.meteksan.kgm.itpim.butce.baseForm.MuhasebeBirimiForm.<init>(MuhasebeBirimiForm.java:46)
at com.meteksan.kgm.itpim.butce.baseForm.HarcamaBirimiForm.<init>(HarcamaBirimiForm.java:85)
at com.meteksan.kgm.iskm.ambar.baseForm.AmbarForm.<init>(AmbarForm.java:173)
at com.meteksan.kgm.sam.baseForm.TalepFisiForm.<init>(TalepFisiForm.java:301)
at com.meteksan.kgm.sam.BD.TalepFisiBD.araTalepFisiById(TalepFisiBD.java:111)
at com.meteksan.kgm.sam.action.yaklasikMaliyet.FirmaEkleSayfaAction.executeAction(FirmaEkleSayfaAction.java:91)
at com.meteksan.kgm.genel.action.GenelAction.execute(GenelAction.java:86)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
at tr.com.meteksan.web.filter.LoginFilter.doFilter(LoginFilter.java:225)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at tr.com.meteksan.web.filter.EncodingFilter.doFilter(EncodingFilter.java:144)
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: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.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
org.hibernate.AssertionFailure: possible non-threadsafe access to the session
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:90)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:510)
at org.hibernate.loader.Loader.doQuery(Loader.java:419)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:210)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1312)
at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:116)
at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:101)
at org.hibernate.persister.entity.BasicEntityPersister.load(BasicEntityPersister.java:2461)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:350)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:331)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:113)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:75)
at org.hibernate.impl.SessionImpl.immediateLoad(SessionImpl.java:639)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:59)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:84)
at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:134)
at com.meteksan.kgm.itpim.butce.pojo.MuhasebeBirimi$$EnhancerByCGLIB$$735d4e29.getEklemeTarihi(<generated>)
at com.meteksan.kgm.genel.form.BaseForm.<init>(BaseForm.java:69)
at com.meteksan.kgm.itpim.butce.baseForm.MuhasebeBirimiForm.<init>(MuhasebeBirimiForm.java:46)
at com.meteksan.kgm.itpim.butce.baseForm.HarcamaBirimiForm.<init>(HarcamaBirimiForm.java:85)
at com.meteksan.kgm.iskm.ambar.baseForm.AmbarForm.<init>(AmbarForm.java:173)
at com.meteksan.kgm.sam.baseForm.TalepFisiForm.<init>(TalepFisiForm.java:301)
at com.meteksan.kgm.sam.BD.TalepFisiBD.araTalepFisiById(TalepFisiBD.java:111)
at com.meteksan.kgm.sam.action.yaklasikMaliyet.FirmaEkleSayfaAction.executeAction(FirmaEkleSayfaAction.java:91)
at com.meteksan.kgm.genel.action.GenelAction.execute(GenelAction.java:86)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
at tr.com.meteksan.web.filter.LoginFilter.doFilter(LoginFilter.java:225)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at tr.com.meteksan.web.filter.EncodingFilter.doFilter(EncodingFilter.java:144)
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: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.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)