type Exception report
message could not execute query; nested exception is org.hibernate.exception.JDBCConnectionException: could not execute query
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.springframework.dao.DataAccessResourceFailureException: could not execute query; nested exception is org.hibernate.exception.JDBCConnectionException: could not execute query org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:625) org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411) org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:912) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:908) net.skydoor.server.utils.TmDao.findAll(TmDao.java:88) net.skydoor.server.rpc.HtmlServiceImpl.getListHtml(HtmlServiceImpl.java:1317) net.skydoor.server.rpc.HtmlServiceImpl$$FastClassByCGLIB$$70d2eb66.invoke(<generated>) net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:688) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:621) net.skydoor.server.rpc.HtmlServiceImpl$$EnhancerByCGLIB$$f8308599.getListHtml(<generated>) net.skydoor.server.HtmlServiceServlet.doGet(HtmlServiceServlet.java:110) javax.servlet.http.HttpServlet.service(HttpServlet.java:624) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.hibernate.exception.JDBCConnectionException: could not execute query org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74) org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) org.hibernate.loader.Loader.doList(Loader.java:2220) org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2108) org.hibernate.loader.Loader.list(Loader.java:2103) org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:340) org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) org.hibernate.impl.SessionImpl.list(SessionImpl.java:1122) org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:921) org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:1) org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:912) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:908) net.skydoor.server.utils.TmDao.findAll(TmDao.java:88) net.skydoor.server.rpc.HtmlServiceImpl.getListHtml(HtmlServiceImpl.java:1317) net.skydoor.server.rpc.HtmlServiceImpl$$FastClassByCGLIB$$70d2eb66.invoke(<generated>) net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:688) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:621) net.skydoor.server.rpc.HtmlServiceImpl$$EnhancerByCGLIB$$f8308599.getListHtml(<generated>) net.skydoor.server.HtmlServiceServlet.doGet(HtmlServiceServlet.java:110) javax.servlet.http.HttpServlet.service(HttpServlet.java:624) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 51,122 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago. sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) java.lang.reflect.Constructor.newInstance(Constructor.java:423) com.mysql.jdbc.Util.handleNewInstance(Util.java:407) com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3092) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2978) com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3526) com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1989) com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2150) com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2626) com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2119) com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2281) org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:97) org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:97) org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:187) org.hibernate.loader.Loader.getResultSet(Loader.java:1791) org.hibernate.loader.Loader.doQuery(Loader.java:674) org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) org.hibernate.loader.Loader.doList(Loader.java:2217) org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2108) org.hibernate.loader.Loader.list(Loader.java:2103) org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:340) org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) org.hibernate.impl.SessionImpl.list(SessionImpl.java:1122) org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:921) org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:1) org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:912) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:908) net.skydoor.server.utils.TmDao.findAll(TmDao.java:88) net.skydoor.server.rpc.HtmlServiceImpl.getListHtml(HtmlServiceImpl.java:1317) net.skydoor.server.rpc.HtmlServiceImpl$$FastClassByCGLIB$$70d2eb66.invoke(<generated>) net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:688) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:621) net.skydoor.server.rpc.HtmlServiceImpl$$EnhancerByCGLIB$$f8308599.getListHtml(<generated>) net.skydoor.server.HtmlServiceServlet.doGet(HtmlServiceServlet.java:110) javax.servlet.http.HttpServlet.service(HttpServlet.java:624) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2539) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2989) com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2978) com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3526) com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1989) com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2150) com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2626) com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2119) com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2281) org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:97) org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:97) org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:187) org.hibernate.loader.Loader.getResultSet(Loader.java:1791) org.hibernate.loader.Loader.doQuery(Loader.java:674) org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) org.hibernate.loader.Loader.doList(Loader.java:2217) org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2108) org.hibernate.loader.Loader.list(Loader.java:2103) org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:340) org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) org.hibernate.impl.SessionImpl.list(SessionImpl.java:1122) org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:921) org.springframework.orm.hibernate3.HibernateTemplate$30.doInHibernate(HibernateTemplate.java:1) org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:912) org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:908) net.skydoor.server.utils.TmDao.findAll(TmDao.java:88) net.skydoor.server.rpc.HtmlServiceImpl.getListHtml(HtmlServiceImpl.java:1317) net.skydoor.server.rpc.HtmlServiceImpl$$FastClassByCGLIB$$70d2eb66.invoke(<generated>) net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:688) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:621) net.skydoor.server.rpc.HtmlServiceImpl$$EnhancerByCGLIB$$f8308599.getListHtml(<generated>) net.skydoor.server.HtmlServiceServlet.doGet(HtmlServiceServlet.java:110) javax.servlet.http.HttpServlet.service(HttpServlet.java:624) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.68 (Ubuntu) logs.