The following is becoming a common and serious problem and I am unable to find
a google solution for it...
I have never seen sych an error and it does not appear to be common enough to
get many google hits but when it happens, no one is able to register at my
site...
Stck trace:
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:
Communications link failure
The last packet successfully received from the server was 4,290,127
milliseconds ago. The last packet sent successfully to the server was 0
milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at
com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3052)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2938)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3481)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1959)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2109)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2648)
at
com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2077)
at
com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2228)
at org.apache.catalina.realm.JDBCRealm.getPassword(JDBCRealm.java:550)
... 15 more
Caused by: 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:2497)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2949)
... 23 more
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - Communications
link failure
The last packet successfully received from the server was 4,299,820
milliseconds ago. The last packet sent successfully to the server was 0
milliseconds ago.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6 org.hibernate.util.JDBCExceptionReporter - No operations
allowed after connection closed.Connection was implicitly closed by the driver.
ERROR TP-Processor6
org.apache.catalina.core.ContainerBase.[Catalina].[thejarbar.org].[/].[Faces
Servlet]The registration code that leads to error is as follows: Form:
<!--Created by IntelliJ IDEA.User: ownerDate: 02.mai.2010Time: 14:07:31To
change this template use File | Settings | File Templates.--><%...@page
contentType="text/html" language="java" %><%...@page
pageEncoding="UTF-8"%><%...@taglib uri="http://java.sun.com/jsf/core";
prefix="f" %><%@ taglib prefix="h" uri="http://java.sun.com/jsf/html";
%><html><head> <meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" /> <title>The jar bar:: register</title></head><f:view>
<body style="background-color:#7b68ee;margin:auto"> <div align="center">
<div align="center" id="header"><jsp:include page="/header.jsp"/></div>
<div align="center" id="centred-content"style="border-width:3px;
border-style: solid; border-color: #7fffd4;width:800px"> <div
id="h1" align="center"> <h:outputText value="#{registerMsg.h1}"
style="color:white; font-family:fantasy;font-size:x-large;"/>
<div id="p1" align="center"> <h:outputText
value="#{registerMsg.p1}"
style="font-size:large;margin-bottom:5em;color:white;"/>
<h:form> </h:form> </div>
<h:form> <h:panelGrid columns="2">
<h:outputText value="*#{registerMsg.name}:" style="color:yellow;"/>
<h:inputText id="name" value="#{user.entity.firstName}"
title="#{registerMsg.nameTitle}"required="true" >
<f:validateLength minimum="3"maximum="30"/>
<h:message for="name"style="color:red;"/> </h:inputText>
<h:outputText value="#{registerMsg.surname}:"
style="color:yellow;"/> <h:inputText id="surname"
value="#{user.entity.lastName}" title="#{registerMsg.surnameTitle}"
required="false"> <f:validateLength
minimum="3"maximum="30"/> <h:message for="surname"
style="color:red;" /> </h:inputText>
<h:outputText value="*#{registerMsg.email}:" style="color:yellow;"/>
<h:inputText id="email" value="#{user.entity.userEmail}"
title="#{registerMsg.emailTitle}"required="true" >
<f:validator validatorId="emailEValidate"/>
<f:validator validatorId="emailPValidate"/>
<h:message for="email" style="color:red;"/>
</h:inputText> <h:outputText
value="*#{registerMsg.userName}:" style="color:yellow;"/>
<h:inputText id="uName" value="#{user.entity.userName}"
title="#{registerMsg.userNameTitle}"required="true">
<f:validator validatorId="uNameEValidate"/>
<f:validateLength maximum="20" minimum="6"/>
<h:message for="uName" style="color:red;"/></h:inputText>
<h:outputText value="*#{registerMsg.password}:" style="color:yellow;"/>
<h:inputSecret id="pass" value="#{user.entity.userPass}"
title="#{registerMsg.passwordTitle}*"required="true" >
<f:validateLength minimum="6"maximum="20" />
<h:message for="pass" style="color:red;"/>
</h:inputSecret> </h:panelGrid>
<h:commandButton action="#{user.create}"
value="#{registerMsg.register}"style="color:#20b2aa;" />
<br> </h:form> </div> <div id="footer"
align="center"> <jsp:include page="/Footer.jsp"/>
</div> </div> </div> </body></f:view></html> Anyone have any
thoughts as to why this is happening?
