HTTP Status 500 - could not execute query; nested exception is org.hibernate.exception.JDBCConnectionException: could not execute query


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.


Apache Tomcat/7.0.68 (Ubuntu)