Deployed app to staging environments. Everything works fine but occasionaly when an action is executed the exception shown in the stack trace comes up. If I retry everything seems to work and no exception.

This keeps comming up once in a while and it's preventing the app from being deployed. I have had many sleepless night's and finally decided to post here. Am using MySQL and occasionally this exception that says
Communications link failure during commit(). Transaction resolution unknown comes up.

All help appreciated. Need it badly. I know it has to do with MySQL dropping the connection or something like that but I haven't figured out how to fix it.

Hibernate version:
2.1.8

Mapping documents:

Code between sessionFactory.openSession() and session.close():
Using suggested Thread local pattern to get session in web app

Full stack trace of any exception that occurs:
2006-09-15 12:14:40,825 ERROR (JDBCExceptionReporter.java:46) - Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.io.EOFException

STACKTRACE:

java.io.EOFException
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1905)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2351)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2862)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1571)
at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1124)
at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:676)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1030)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at net.sf.hibernate.impl.BatcherImpl.getResultSet(BatcherImpl.java:71)
at net.sf.hibernate.loader.Loader.getResultSet(Loader.java:551)
at net.sf.hibernate.loader.Loader.doFind(Loader.java:140)
at net.sf.hibernate.loader.Loader.find(Loader.java:620)
at net.sf.hibernate.hql.QueryTranslator.find(QueryTranslator.java:928)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1343)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1322)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1314)
at com.gci.data.finders.GCImageFinder.findListingImages(GCImageFinder.java:28)
at com.gci.site.webappAdmin.ListingsAdminServlet.loadListingImages(ListingsAdminServlet.java:242)
at com.gci.site.webappAdmin.ListingsAdminServlet.executeAction(ListingsAdminServlet.java:124)
at com.gci.site.WizardServlet.doGet(WizardServlet.java:228)
at com.regenerix.software.web.apputils.AbstractMVC.doPost(AbstractMVC.java:35)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)
at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)


** END NESTED EXCEPTION **



Name and version of the database you are using:
MySQL 4 Standard

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:


Problems with Session and transaction handling?

Read this: http://hibernate.org/42.html