Login with system exception

Getting this exception when trying to log in Mango. The error message is listed below.

System exception!

The server has experienced an exception processing your last request. The exception has been logged, and system administrators will be notified of this problem. You may continue to use the site. We apologize for the inconvenience.

The problem happens a few times.

Could someone know how to fix the problem.

Thanks !

Check your tomcat console or log files for more descriptive error messages.

The detail error messages are listed below.

System exception!

The server has experienced an exception processing your last request. The exception has been logged, and system administrators will be notified of this problem. You may continue to use the site. We apologize for the inconvenience.

org.springframework.dao.RecoverableDataAccessException: PreparedStatementCallback; SQL [select id, username, password, email, phone, admin, disabled, homeUrl, lastLogin, receiveAlarmEmails, receiveOwnAuditEvents from users where lower(username)=lower(?)]; The last packet successfully received from the server was105654 milliseconds ago.The last packet sent successfully to the server was 105658 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was105654 milliseconds ago.The last packet sent successfully to the server was 105658 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at org.springframework.jdbc.support.SQLExceptionSubclassTranslator.doTranslate(SQLExceptionSubclassTranslator.java:9

at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:602)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:636)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:665)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:673)
at com.serotonin.db.spring.ExtendedJdbcTemplate.queryForObject(ExtendedJdbcTemplate.java:4

at com.serotonin.db.DaoUtils.queryForObject(DaoUtils.java:215)
at com.serotonin.m2m2.db.dao.UserDao.getUser(UserDao.java:36)
at com.serotonin.m2m2.web.mvc.controller.LoginController.onSubmit(LoginController.java:79)
at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272)
at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:26

at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:4

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.serotonin.web.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:37)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:38

at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:41

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:93

at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:21

at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was105654 milliseconds ago.The last packet sent successfully to the server was 105658 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3270)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1932)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2101)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2554)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1761)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1912)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:99)
at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:643)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:586)
... 35 more
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 java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3251)
... 43 more

REQUEST URL
http://70.136.253.131:8080/exception/error.jsp

REQUEST PARAMETERS
username=greentraks
password=greentraks

REQUEST HEADERS
Host=70.136.253.131:8080
Connection=keep-alive
User-Agent=Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11
Accept=text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Referer=http://70.136.253.131:8080/login.htm
Accept-Encoding=gzip,deflate,sdch
Accept-Language=en-US,en;q=0.8
Accept-Charset=ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie=JSESSIONID=u22booykdzyw
Content-Length=39
Cache-Control=max-age=0
Origin=http://70.136.253.131:8080
Content-Type=application/x-www-form-urlencoded

REQUEST ATTRIBUTES
instanceDescription=My ICI Analytics
javax.servlet.forward.request_uri=/login.htm
org.springframework.web.servlet.DispatcherServlet.THEME_SOURCE=WebApplicationContext for namespace 'springDispatcher-servlet': startup date [Thu May 24 12:52:28 PDT 2012]; parent: Root WebApplicationContext
org.springframework.web.servlet.DispatcherServlet.THEME_RESOLVER=org.springframework.web.servlet.theme.FixedThemeResolver@68042f
org.springframework.web.servlet.DispatcherServlet.CONTEXT=WebApplicationContext for namespace 'springDispatcher-servlet': startup date [Thu May 24 12:52:28 PDT 2012]; parent: Root WebApplicationContext
javax.servlet.forward.context_path=
javax.servlet.error.status_code=500
javax.servlet.error.exception_type=class org.springframework.dao.RecoverableDataAccessException
javax.servlet.error.servlet_name=springDispatcher
NEW_ID=-1
availableLanguages=[]
org.springframework.web.servlet.HandlerMapping.pathWithinHandlerMapping=/login.htm
lang=en
org.mortbay.jetty.error_page=/exception/error.jsp
javax.servlet.forward.servlet_path=/login.htm
javax.servlet.error.message=PreparedStatementCallback; SQL [select id, username, password, email, phone, admin, disabled, homeUrl, lastLogin, receiveAlarmEmails, receiveOwnAuditEvents from users where lower(username)=lower(?)]; The last packet successfully received from the server was105654 milliseconds ago.The last packet sent successfully to the server was 105658 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was105654 milliseconds ago.The last packet sent successfully to the server was 105658 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
org.springframework.web.servlet.HandlerMapping.bestMatchingPattern=/login.htm
javax.servlet.error.exception=org.springframework.dao.RecoverableDataAccessException: PreparedStatementCallback; SQL [select id, username, password, email, phone, admin, disabled, homeUrl, lastLogin, receiveAlarmEmails, receiveOwnAuditEvents from users where lower(username)=lower(?)]; The last packet successfully received from the server was105654 milliseconds ago.The last packet sent successfully to the server was 105658 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was105654 milliseconds ago.The last packet sent successfully to the server was 105658 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
javax.servlet.error.request_uri=/login.htm
org.springframework.web.servlet.DispatcherServlet.LOCALE_RESOLVER=org.springframework.web.servlet.i18n.SessionLocaleResolver@eaaeff

SESSION ATTRIBUTES

CONTEXT ATTRIBUTES
constants.AuditEventType.TYPE_DATA_POINT=DATA_POINT
com.sun.jsp.tagFileJarUrlsCache={}
org.springframework.web.servlet.FrameworkServlet.CONTEXT.springDispatcher=WebApplicationContext for namespace 'springDispatcher-servlet': startup date [Thu May 24 12:52:28 PDT 2012]; parent: Root WebApplicationContext
constants.Permissions.DataPointAccessTypes.DATA_SOURCE=3
constants.SystemEventType.TYPE_EMAIL_SEND_FAILURE=EMAIL_SEND_FAILURE
constants.SystemEventType.TYPE_USER_LOGIN=USER_LOGIN
DwrContainer=org.directwebremoting.impl.DefaultContainer@1870176
WatchListDwr=com.serotonin.m2m2.watchlist.WatchListDwr@7111bd
constants.SystemEventType.TYPE_PROCESS_FAILURE=PROCESS_FAILURE
constants.EventType.EventTypeNames.PUBLISHER=PUBLISHER
EventsDwr=com.serotonin.m2m2.web.dwr.EventsDwr@143bdae
constants.DataTypes.IMAGE=5
EmportDwr=com.serotonin.m2m2.web.dwr.EmportDwr@5a05d3
constants.Permissions.DataPointAccessTypes.READ=1
PointHierarchyDwr=com.serotonin.m2m2.watchlist.hierarchy.PointHierarchyDwr@349a4b
org.springframework.web.context.support.ServletContextScope=org.springframework.web.context.support.ServletContextScope@17ded87
constants.EventType.EventTypeNames.DATA_POINT=DATA_POINT
constants.SystemEventType.TYPE_SYSTEM_STARTUP=SYSTEM_STARTUP
SystemSettingsDwr=com.serotonin.m2m2.web.dwr.SystemSettingsDwr@754f59
constants.Permissions.DataPointAccessTypes.NONE=0
constants.Common.NEW_ID=-1
DataSourceListDwr=com.serotonin.m2m2.web.dwr.DataSourceListDwr@1ac616c
javax.servlet.ServletConfig=org.mortbay.jetty.servlet.ServletHolder$Config@3007a5
constants.Permissions.DataPointAccessTypes.ADMIN=4
constants.UserComment.TYPE_EVENT=1
org.directwebremoting.WebContextFactory$WebContextBuilder=org.directwebremoting.impl.DefaultWebContextBuilder@1460bca
constants.AuditEventType.TYPE_POINT_EVENT_DETECTOR=POINT_EVENT_DETECTOR
constants.EventType.EventTypeNames.AUDIT=AUDIT
constants.EventType.EventTypeNames.SYSTEM=SYSTEM
constants.DataTypes.MULTISTATE=2
org.directwebremoting.impl.ServerContext=org.directwebremoting.impl.DefaultServerContext@1b0236e
javax.servlet.http.HttpServlet=org.directwebremoting.servlet.DwrServlet@e64c40
MiscDwr=com.serotonin.m2m2.web.dwr.MiscDwr@1980043
javax.servlet.context.tempdir=/tmp/Jetty_0_0_0_0_8080_web____uv1e71
com.sun.jsp.taglibraryCache=EXCEPTION in String.valueOf: null
DataPointDetailsDwr=com.serotonin.m2m2.web.dwr.DataPointDetailsDwr@dacb2c
constants.DataTypes.ALPHANUMERIC=4
constants.SystemEventType.TYPE_MAX_ALARM_LEVEL_CHANGED=MAX_ALARM_LEVEL_CHANGED
org.directwebremoting.ContainerList=[org.directwebremoting.impl.DefaultContainer@1870176]
constants.SystemEventType.TYPE_SET_POINT_HANDLER_FAILURE=SET_POINT_HANDLER_FAILURE
constants.DataTypes.BINARY=1
org.directwebremoting.Container=org.directwebremoting.impl.DefaultContainer@1870176
org.springframework.web.context.WebApplicationContext.ROOT=Root WebApplicationContext: startup date [Thu May 24 12:52:25 PDT 2012]; root of context hierarchy
constants.EventType.EventTypeNames.DATA_SOURCE=DATA_SOURCE
constants.SystemEventType.TYPE_LICENSE_CHECK=LICENSE_CHECK
jspx.1st.request=true
constants.Permissions.DataPointAccessTypes.SET=2
constants.AuditEventType.TYPE_EVENT_HANDLER=EVENT_HANDLER
EventHandlersDwr=com.serotonin.m2m2.web.dwr.EventHandlersDwr@50b831
clientSideMessages={js.help.lastUpdated=com.serotonin.m2m2.i18n.TranslatableMessage@729293fd, js.help.error=com.serotonin.m2m2.i18n.TranslatableMessage@f876c0, common.disabledToggle=com.serotonin.m2m2.i18n.TranslatableMessage@d7f89333, header.mute=com.serotonin.m2m2.i18n.TranslatableMessage@43df3cba, js.email.testSent=com.serotonin.m2m2.i18n.TranslatableMessage@f59d9881, common.administrator=com.serotonin.m2m2.i18n.TranslatableMessage@a467f3ea, js.help.related=com.serotonin.m2m2.i18n.TranslatableMessage@3dce6ae3, common.sendTestEmail=com.serotonin.m2m2.i18n.TranslatableMessage@8fd89c9f, js.email.noRecipForEmail=com.serotonin.m2m2.i18n.TranslatableMessage@4b694592, common.enabledToggle=com.serotonin.m2m2.i18n.TranslatableMessage@ea5c2f12, js.email.addAddress=com.serotonin.m2m2.i18n.TranslatableMessage@cbb9a38a, header.unmute=com.serotonin.m2m2.i18n.TranslatableMessage@d635aa93, js.email.addMailingList=com.serotonin.m2m2.i18n.TranslatableMessage@6fa4a69f, common.alarmLevel.lifeSafety=com.serotonin.m2m2.i18n.TranslatableMessage@1c71626, common.loading=com.serotonin.m2m2.i18n.TranslatableMessage@cf5f0419, common.minimize=com.serotonin.m2m2.i18n.TranslatableMessage@5d740b21, js.email.addUser=com.serotonin.m2m2.i18n.TranslatableMessage@49cc77b5, common.maximize=com.serotonin.m2m2.i18n.TranslatableMessage@c752a74f, js.email.noRecipients=com.serotonin.m2m2.i18n.TranslatableMessage@d78563d2, common.user=com.serotonin.m2m2.i18n.TranslatableMessage@8a9479ce, common.alarmLevel.none=com.serotonin.m2m2.i18n.TranslatableMessage@223c1a70, common.access.set=com.serotonin.m2m2.i18n.TranslatableMessage@a3e5309b, events.silence=com.serotonin.m2m2.i18n.TranslatableMessage@8376c0ac, common.disabled=com.serotonin.m2m2.i18n.TranslatableMessage@be9bfeff, common.access.read=com.serotonin.m2m2.i18n.TranslatableMessage@d8bff83d, common.alarmLevel.critical=com.serotonin.m2m2.i18n.TranslatableMessage@2b076d7, common.alarmLevel.info=com.serotonin.m2m2.i18n.TranslatableMessage@2239cfe6, events.unsilence=com.serotonin.m2m2.i18n.TranslatableMessage@29ad6533, common.alarmLevel.urgent=com.serotonin.m2m2.i18n.TranslatableMessage@8fa9c879}
constants.SystemEventType.TYPE_SYSTEM_SHUTDOWN=SYSTEM_SHUTDOWN
constants.UserComment.TYPE_POINT=2
DataSourceEditDwr=com.serotonin.m2m2.web.dwr.DataSourceEditDwr@16cb5d9
ModbusEditDwr=com.serotonin.m2m2.modbus.dwr.ModbusEditDwr@16d809
constants.DataTypes.NUMERIC=3
constants.AuditEventType.TYPE_DATA_SOURCE=DATA_SOURCE

java.net.SocketException: Broken pipe

Seems like Mango has a poor connection to your MySQL database. You should try to improve your network reliability.