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 Post subject: NullPointerException : PreparedStatement.java:1709
PostPosted: Fri Jun 01, 2012 10:57 am 
Newbie

Joined: Fri Jun 01, 2012 10:42 am
Posts: 3
Hello,

I'm still pretty new to Hibernate, but I'm using it behind my website, StaticVoidGames.com.

Everything works great most of the time. I've had hundreds of users over the course of a week or so, as well as periods when I'm the only one doing anything. And it works great for days at a time. But seemingly randomly, the entire site goes down (I'm using AWS, so if the health check on the main page, which call the below code, fails, then the whole site goes down). I finally tracked down the start of the downtime to this error, but unfortunately I have no idea what it means. And it doesn't happen often, just often enough that I have no idea when the site will go down next.

The line in my jsp that eventually leads to the error is this: List<Game> games = HibernateApi.getAllGames();

Which calls this simple method:

Code:
public static List<Game> getAllGames(){
   List<Game> games = session.createQuery( "from Game" ).list();
   return games;
}


Which then leads to this stack trace:

Code:
Jun 1, 2012 7:53:03 AM com.mchange.v2.c3p0.stmt.GooGooStatementCache assimilateNewCheckedOutStatement
INFO: Multiply prepared statement! select game0_.gameName as gameName0_, game0_.appletClass as appletCl2_0_, game0_.appletDescription as appletDe3_0_, game0_.appletHeight as appletHe4_0_, game0_.appletWidth as appletWi5_0_, game0_.backgroundUrl as backgrou6_0_, game0_.faviconUrl as faviconUrl0_, game0_.gameDescription as gameDesc8_0_, game0_.jarFileUrl as jarFileUrl0_, game0_.javaVersion as javaVer10_0_, game0_.mainClass as mainClass0_, game0_.member as member0_, game0_.rating as rating0_, game0_.shortDescription as shortDe14_0_, game0_.sourceZipUrl as sourceZ15_0_, game0_.thumbnailUrl as thumbna16_0_, game0_.timestamp as timestamp0_, game0_.title as title0_, game0_.website as website0_, game0_.webstartHeight as webstar20_0_, game0_.webstartWidth as webstar21_0_ from Games game0_
Jun 1, 2012 7:53:33 AM com.mchange.v2.c3p0.stmt.GooGooStatementCache assimilateNewCheckedOutStatement
INFO: Multiply prepared statement! select game0_.gameName as gameName0_, game0_.appletClass as appletCl2_0_, game0_.appletDescription as appletDe3_0_, game0_.appletHeight as appletHe4_0_, game0_.appletWidth as appletWi5_0_, game0_.backgroundUrl as backgrou6_0_, game0_.faviconUrl as faviconUrl0_, game0_.gameDescription as gameDesc8_0_, game0_.jarFileUrl as jarFileUrl0_, game0_.javaVersion as javaVer10_0_, game0_.mainClass as mainClass0_, game0_.member as member0_, game0_.rating as rating0_, game0_.shortDescription as shortDe14_0_, game0_.sourceZipUrl as sourceZ15_0_, game0_.thumbnailUrl as thumbna16_0_, game0_.timestamp as timestamp0_, game0_.title as title0_, game0_.website as website0_, game0_.webstartHeight as webstar20_0_, game0_.webstartWidth as webstar21_0_ from Games game0_
Jun 1, 2012 7:54:02 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [] threw exception [An exception occurred processing JSP page /index.jsp at line 16

13:    else{
14:       session.setAttribute("loginRedirect", request.getRequestURL().toString());
15:    }
16:    List<Game> games = HibernateApi.getAllGames();
17:    
18:    //update cookies for forum
19:    if(session.getAttribute("user") != null){


Stacktrace:] with root cause
java.lang.NullPointerException
   at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1709)
   at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1685)
   at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1396)
   at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
   at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:616)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
   at $Proxy10.executeQuery(Unknown Source)
   at org.hibernate.loader.Loader.getResultSet(Loader.java:1978)
   at org.hibernate.loader.Loader.doQuery(Loader.java:829)
   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
   at org.hibernate.loader.Loader.doList(Loader.java:2463)
   at org.hibernate.loader.Loader.doList(Loader.java:2449)
   at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2279)
   at org.hibernate.loader.Loader.list(Loader.java:2274)
   at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
   at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
   at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:196)
   at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1115)
   at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
   at com.staticvoidgames.hibernateApi.HibernateApi.getAllGames(HibernateApi.java:114)
   at org.apache.jsp.index_jsp._jspService(index_jsp.java:93)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
   at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:636)
Jun 1, 2012 7:54:02 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [] threw exception [An exception occurred processing JSP page /index.jsp at line 16

13:    else{
14:       session.setAttribute("loginRedirect", request.getRequestURL().toString());
15:    }
16:    List<Game> games = HibernateApi.getAllGames();
17:    
18:    //update cookies for forum
19:    if(session.getAttribute("user") != null){


Stacktrace:] with root cause
java.lang.NullPointerException
   at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1709)
   at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1685)
   at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1396)
   at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
   at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:616)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
   at $Proxy10.executeQuery(Unknown Source)
   at org.hibernate.loader.Loader.getResultSet(Loader.java:1978)
   at org.hibernate.loader.Loader.doQuery(Loader.java:829)
   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
   at org.hibernate.loader.Loader.doList(Loader.java:2463)
   at org.hibernate.loader.Loader.doList(Loader.java:2449)
   at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2279)
   at org.hibernate.loader.Loader.list(Loader.java:2274)
   at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
   at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
   at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:196)
   at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1115)
   at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
   at com.staticvoidgames.hibernateApi.HibernateApi.getAllGames(HibernateApi.java:114)
   at org.apache.jsp.index_jsp._jspService(index_jsp.java:93)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
   at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:636)
Jun 1, 2012 7:54:02 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
WARN: SQL Error: 0, SQLState: 08S01
Jun 1, 2012 7:54:02 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.io.EOFException
MESSAGE: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

STACKTRACE:

java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
   at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997)
   at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2411)
   at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916)
   at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
   at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
   at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
   at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
   at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1467)
   at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
   at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:616)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
   at $Proxy10.executeQuery(Unknown Source)
   at org.hibernate.loader.Loader.getResultSet(Loader.java:1978)
   at org.hibernate.loader.Loader.doQuery(Loader.java:829)
   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
   at org.hibernate.loader.Loader.doList(Loader.java:2463)
   at org.hibernate.loader.Loader.doList(Loader.java:2449)
   at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2279)
   at org.hibernate.loader.Loader.list(Loader.java:2274)
   at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
   at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
   at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:196)
   at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1115)
   at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
   at com.staticvoidgames.hibernateApi.HibernateApi.getAllGames(HibernateApi.java:114)
   at org.apache.jsp.index_jsp._jspService(index_jsp.java:93)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
   at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:636)


** END NESTED EXCEPTION **





After that, the error repeats the following nonstop until I restart my app server. I've checked, and my database is still available (it has been available for days now, and this error happened a couple hours ago).

Code:
Last packet sent to the server was 88943 ms ago.
Jun 1, 2012 7:54:02 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [] threw exception [An exception occurred processing JSP page /index.jsp at line 16

13:    else{
14:       session.setAttribute("loginRedirect", request.getRequestURL().toString());
15:    }
16:    List<Game> games = HibernateApi.getAllGames();
17:    
18:    //update cookies for forum
19:    if(session.getAttribute("user") != null){


Stacktrace:] with root cause
com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.io.EOFException
MESSAGE: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

STACKTRACE:

java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
   at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997)
   at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2411)
   at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916)
   at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
   at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
   at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
   at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
   at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1467)
   at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
   at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:616)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
   at $Proxy10.executeQuery(Unknown Source)
   at org.hibernate.loader.Loader.getResultSet(Loader.java:1978)
   at org.hibernate.loader.Loader.doQuery(Loader.java:829)
   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
   at org.hibernate.loader.Loader.doList(Loader.java:2463)
   at org.hibernate.loader.Loader.doList(Loader.java:2449)
   at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2279)
   at org.hibernate.loader.Loader.list(Loader.java:2274)
   at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
   at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
   at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:196)
   at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1115)
   at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
   at com.staticvoidgames.hibernateApi.HibernateApi.getAllGames(HibernateApi.java:114)
   at org.apache.jsp.index_jsp._jspService(index_jsp.java:93)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
   at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:636)


** END NESTED EXCEPTION **



Last packet sent to the server was 88943 ms ago.
   at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2622)
   at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916)
   at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
   at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
   at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
   at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
   at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1467)
   at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
   at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:616)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
   at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
   at $Proxy10.executeQuery(Unknown Source)
   at org.hibernate.loader.Loader.getResultSet(Loader.java:1978)
   at org.hibernate.loader.Loader.doQuery(Loader.java:829)
   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
   at org.hibernate.loader.Loader.doList(Loader.java:2463)
   at org.hibernate.loader.Loader.doList(Loader.java:2449)
   at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2279)
   at org.hibernate.loader.Loader.list(Loader.java:2274)
   at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
   at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
   at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:196)
   at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1115)
   at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
   at com.staticvoidgames.hibernateApi.HibernateApi.getAllGames(HibernateApi.java:114)
   at org.apache.jsp.index_jsp._jspService(index_jsp.java:93)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
   at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:636)
Jun 1, 2012 7:54:02 AM org.apache.catalina.core.StandardHostValve throwable
WARNING: Exception Processing ErrorPage[exceptionType=java.lang.Exception, location=/error.jsp]
ClientAbortException:  java.net.SocketException: Broken pipe
   at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:336)
   at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:301)
   at org.apache.catalina.connector.Response.flushBuffer(Response.java:565)
   at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:401)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:191)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
   at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:636)
Caused by: java.net.SocketException: Broken pipe
   at java.net.SocketOutputStream.socketWrite0(Native Method)
   at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
   at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
   at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:216)
   at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:460)
   at org.apache.coyote.http11.InternalOutputBuffer.flush(InternalOutputBuffer.java:119)
   at org.apache.coyote.http11.AbstractHttp11Processor.action(AbstractHttp11Processor.java:781)
   at org.apache.coyote.Response.action(Response.java:170)
   at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:331)
   ... 15 more
Jun 1, 2012 7:54:18 AM com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector run
WARNING: com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@30acf575 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
Jun 1, 2012 7:54:18 AM com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector run
WARNING: com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@30acf575 -- APPARENT DEADLOCK!!! Complete Status:
   Managed Threads: 3
   Active Threads: 3
   Active Tasks:
      com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@6b7467dc (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1)
      com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@274ed3a1 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)
      com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@28280330 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)
   Pending Tasks:
      com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@5ae958e8
      com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@dcc15f9
Pool thread stack traces:
   Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1,5,main]
      java.net.PlainSocketImpl.socketConnect(Native Method)
      java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
      java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
      java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
      java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
      java.net.Socket.connect(Socket.java:546)
      java.net.Socket.connect(Socket.java:495)
      java.net.Socket.<init>(Socket.java:392)
      java.net.Socket.<init>(Socket.java:235)
      com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:256)
      com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:271)
      com.mysql.jdbc.Connection.createNewIO(Connection.java:2771)
      com.mysql.jdbc.Connection.<init>(Connection.java:1555)
      com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
      com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
      com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
      com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
      com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
      com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
      com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
      com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
      com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
   Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2,5,main]
      java.net.PlainSocketImpl.socketConnect(Native Method)
      java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
      java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
      java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
      java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
      java.net.Socket.connect(Socket.java:546)
      java.net.Socket.connect(Socket.java:495)
      java.net.Socket.<init>(Socket.java:392)
      java.net.Socket.<init>(Socket.java:235)
      com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:256)
      com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:271)
      com.mysql.jdbc.Connection.createNewIO(Connection.java:2771)
      com.mysql.jdbc.Connection.<init>(Connection.java:1555)
      com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
      com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
      com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
      com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
      com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
      com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
      com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
      com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
      com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
   Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,main]
      java.net.PlainSocketImpl.socketConnect(Native Method)
      java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
      java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
      java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
      java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
      java.net.Socket.connect(Socket.java:546)
      java.net.Socket.connect(Socket.java:495)
      java.net.Socket.<init>(Socket.java:392)
      java.net.Socket.<init>(Socket.java:235)
      com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:256)
      com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:271)
      com.mysql.jdbc.Connection.createNewIO(Connection.java:2771)
      com.mysql.jdbc.Connection.<init>(Connection.java:1555)
      com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
      com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
      com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
      com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
      com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
      com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
      com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
      com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
      com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)


Jun 1, 2012 7:54:18 AM com.mchange.v2.c3p0.impl.NewPooledConnection handleThrowable
WARNING: [c3p0] A PooledConnection that has already signalled a Connection error is still in use!
Jun 1, 2012 7:54:18 AM com.mchange.v2.c3p0.impl.NewPooledConnection handleThrowable
WARNING: [c3p0] Another error has occurred [ com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: No operations allowed after connection closed.Connection was implicitly closed due to underlying exception/error:


I'd absolutely love any feedback on this, or a clue as to what's going on, or a way around it, or anything. Like I said this doesn't happen often, but it seems to be happening more often now, maybe once a day or so - which is weird, because I'm actually getting fewer users than before (a game programming competition caused a spike in traffic, and the site did not go down any more often than it does now).

I'm still really new to Hibernate, databases, and web programming in general, so if there's any more information you need, let me know.

Thanks for your time, and I appreciate any help you can give me.


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 Post subject: Re: NullPointerException : PreparedStatement.java:1709
PostPosted: Mon Jun 04, 2012 10:47 pm 
Newbie

Joined: Fri Jun 01, 2012 10:42 am
Posts: 3
I don't mean to bump the thread, but I can provide any more information if it would help. What else can I include to make my question more answerable? How can I get to the bottom of this?


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 Post subject: Re: NullPointerException : PreparedStatement.java:1709
PostPosted: Wed Jun 06, 2012 8:33 am 
Newbie

Joined: Fri Jun 01, 2012 10:42 am
Posts: 3
I've also posted this on a Java forum here, but I doubt I'll get an answer there since it's not a Hibernate forum, so I'm still very open to suggestions!


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