Hello

I'm using Hibernate + Struts with Tomcat 4.1 + MySQL for develop my application. Anything well in testing and development (shorttime). But when i changed system time (up several days) a error occurred. I think some connection are dead or some connection pooling mechanism caused that error. Please tell me how to fix that error ? I 've posted all information i have. Thank you.

Henry Le


Hibernate version:2.1

Mapping documents:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">
<hibernate-configuration>
<!-- a SessionFactory instance listed as /jndi/name -->
<session-factory name="hibernate/SessionFactory">
<!-- properties -->
<property name="dialect">net.sf.hibernate.dialect.MySQLDialect</property>
<property name="connection.username">root</property>
<property name="connection.password"/>
<property name="connection.url">jdbc:mysql://localhost:3306/dbtest?useUnicode=true&amp;characterEncoding=utf8</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="show_sql">false</property>
<property name="use_outer_join">true</property>
<property name="transaction.factory_class">net.sf.hibernate.transaction.JDBCTransactionFactory</property>
<property name="dbcp.minIdle">10</property>
<property name="cache.use_query_cache">true</property>
<!-- mapping files -->
<mapping resource="org/cpy/test/datamanagement/domain/Product.hbm.xml"/>
</session-factory>
</hibernate-configuration>





Full stack trace of any exception that occurs:
net.sf.hibernate.JDBCException: SQLException occurred
------------------
net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:3612)
net.sf.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:238)
org.humanware.tlaptop.datamanagement.dao.BaseDAO.findAll(BaseDAO.java:300)
org.humanware.tlaptop.datamanagement.dao.BaseDAO.findAll(BaseDAO.java:266)
org.humanware.tlaptop.datamanagement.dao.BaseDAO.findAll(BaseDAO.java:251)
org.humanware.tlaptop.delegate.ProductDisplayDelegate.getAllProduct(ProductDisplayDelegate.java:31)
org.humanware.tlaptop.delegate.DisplayDelegateImp.getAllProduct(DisplayDelegateImp.java:44)
org.apache.jsp.test_jsp._jspService(test_jsp.java:56)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:210)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
org.humanware.tlaptop.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:89)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:324)
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:395)
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:673)
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:615)
org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:786)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
java.lang.Thread.run(Thread.java:534)



Name and version of the database i'm using:
MySQL 4.0