Hi,
Application I am working on is of 3 tier architecture. Tier1 - Client (UI) Tier2 - App server(Business Logic), Tier3 DB server.
I am using hibernate3 for ORM, DBCP for connection pooling, apache tomcat 6 for app server and oracle 10g for DB server.
Whenever i do multiple requests continuously from the client side i get the following exception
from the application server side saying some problem with the "DeletatingPreparedStatement".
Fact is I am writing HQL queries and its being the problem at the HIBERNATE side.
The data I get from the DB is not too much may be some thousand records. The request made will be served properly if the previous call to application server has finished its execution. If i make another call to process some queries before the current call has finished then the exception occurs. Every call to the DB will fetch around 1000 records.
I am not getting any hibernate or DBCP properties either to set so that i can specify explicitly the maxQuery limit or the Timeout period. Hibernate is present at the Application server side.
Dont know how to handle it, please can anyone help.
Code:
Dec 3, 2010 9:29:48 AM org.hibernate.jdbc.AbstractBatcher closeQueryStatement
WARNING: exception clearing maxRows/queryTimeout
java.sql.SQLException: org.apache.commons.dbcp.DelegatingPreparedStatement with address: "oracle.jdbc.driver.OraclePreparedStatementWrapper@1da6308" is closed.
at org.apache.commons.dbcp.DelegatingStatement.checkOpen(DelegatingStatement.java:137)
at org.apache.commons.dbcp.DelegatingStatement.getMaxRows(DelegatingStatement.java:237)
at org.apache.commons.dbcp.DelegatingStatement.getMaxRows(DelegatingStatement.java:237)
at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:298)
at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:234)
at org.hibernate.loader.Loader.doQuery(Loader.java:771)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:271)
at org.hibernate.loader.Loader.doList(Loader.java:2273)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2151)
at org.hibernate.loader.Loader.list(Loader.java:2146)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:448)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1258)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
at com.conti.corema.service.dao.CoremaTreeViewDAO.getAggrInfoData(CoremaTreeViewDAO.java:1115)
at com.conti.corema.service.dao.CoremaProjectVesionDAO.getProjectVersionData(CoremaProjectVesionDAO.java:1199)
at com.conti.corema.service.dao.CoremaEvalInterfaceImplDAO.getProjectVersionData(CoremaEvalInterfaceImplDAO.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.remoting.support.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:77)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy4.getProjectVersionData(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:205)
at org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:38)
at org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:78)
at org.springframework.remoting.support.RemoteInvocationBasedExporter.invokeAndCreateResult(RemoteInvocationBasedExporter.java:114)
at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.handleRequest(HttpInvokerServiceExporter.java:74)
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:49)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:563)
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.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:619)
Dec 3, 2010 9:29:48 AM org.hibernate.util.JDBCExceptionReporter logExceptions
WARNING: SQL Error: 17010, SQLState: 99999
Dec 3, 2010 9:29:48 AM org.hibernate.util.JDBCExceptionReporter logExceptions
SEVERE: Closed Resultset: next
java.lang.NullPointerException
at com.conti.corema.service.util.DBCPConnectionProvider.closeConnection(DBCPConnectionProvider.java:222)
at org.hibernate.jdbc.ConnectionManager.closeConnection(ConnectionManager.java:474)
at org.hibernate.jdbc.ConnectionManager.aggressiveRelease(ConnectionManager.java:429)
at org.hibernate.jdbc.ConnectionManager.afterTransaction(ConnectionManager.java:316)
at org.hibernate.jdbc.JDBCContext.afterNontransactionalQuery(JDBCContext.java:268)
at org.hibernate.impl.SessionImpl.afterOperation(SessionImpl.java:587)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1263)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
at com.conti.corema.service.dao.CoremaTreeViewDAO.getAggrInfoData(CoremaTreeViewDAO.java:1115)
at com.conti.corema.service.dao.CoremaProjectVesionDAO.getProjectVersionData(CoremaProjectVesionDAO.java:1199)
at com.conti.corema.service.dao.CoremaEvalInterfaceImplDAO.getProjectVersionData(CoremaEvalInterfaceImplDAO.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.remoting.support.RemoteInvocationTraceInterceptor.invoke(RemoteInvocationTraceInterceptor.java:77)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy4.getProjectVersionData(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.remoting.support.RemoteInvocation.invoke(RemoteInvocation.java:205)
at org.springframework.remoting.support.DefaultRemoteInvocationExecutor.invoke(DefaultRemoteInvocationExecutor.java:38)
at org.springframework.remoting.support.RemoteInvocationBasedExporter.invoke(RemoteInvocationBasedExporter.java:78)
at org.springframework.remoting.support.RemoteInvocationBasedExporter.invokeAndCreateResult(RemoteInvocationBasedExporter.java:114)
at org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.handleRequest(HttpInvokerServiceExporter.java:74)
at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:49)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:563)
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.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:619)
Login
FAQ
Search