[Using Sakai] Can you please help me to interprete error report?

Yzelle, Sonette SYzelle at unisa.ac.za
Fri Mar 19 03:48:50 PDT 2010 

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________________________________

Hi Rafael,
We are experiencing the same problem.  I actually posted an e-email to sakai-dev yesterday (18 March).  It feels like session variables/beans are disappearing.  It happens quite often during the day and we’ve had this problem for a few years and have not been able to resolve it.  It only happens on our local tools and not on standard Sakai tools.  I will paste my e-mail of Thursday below.  Maybe we can work together in resolving this issue if we no one else can assist us.  This problem is really a big headache for us.
Please let me know if you’ve had some luck in a reply to your e-mail.
We are on sakai2.5.x.
Good luck!
Sonette
Sonette Yzelle
UNISA
ICT
Analyst Programmer
syzelle at unisa.ac.za
Thursday, March 18, 2010 10:50 AM
Good day,

We are experiencing quite often that session bean values are disappearing.  It only happen on Unisa tools and not on standard sakai tools.  It does not always happen, I would say about 5% of the time.  We have had this problem for a few years and could not resolve it yet.

Examples of values disappearing:
•         Session user
•         Values that was entered on a jsp, and was validated as mandatory is just missing when you go to the action class to manipulate the data.

We are using Struts so maybe it is struts related.  Have any of you experienced similar problems or have any ideas on how we can resolve this problem?

Regards
Sonette



________________________________
From: sakai-user-bounces at collab.sakaiproject.org [sakai-user-bounces at collab.sakaiproject.org] On Behalf Of Rafael Morales [rmorales at udgvirtual.udg.mx]
Sent: Thursday, March 18, 2010 9:44 PM
To: Sakai Users
Subject: [Using Sakai] Can you please help me to interprete error report?

Hello,

I have been receiving reports of error which I cannot interprete. So far it seems to be related to an old page cached, but I have been unable to move from that.

Please find the report below (Sakai 2.4.x on Tomcat 5.0 and Java 1.5). Any suggestions would be very welcome.

Regards,
Rafael


usuario: null (null)
correo: null
usage-session: null
stack-trace-digest: AB5F606FD80DAFEF77267BDF0893A813622D8D52
sakai-version: 2.4.x
service-version: 2.4.x
app-server: labproy
request-path: /portal/tool/!gateway-410
hora: 18/03/2010 10:43:46


traza de la pila:

org.sakaiproject.portal.api.PortalHandlerException: org.sakaiproject.tool.api.ToolException
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPortal.java:718)
caused by: org.sakaiproject.tool.api.ToolException
    at org.sakaiproject.cheftool.ToolServlet.doGet(ToolServlet.java:227)
caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
caused by: java.lang.NullPointerException
    at org.sakaiproject.site.tool.SiteBrowserAction.buildSimpleSearchContext(SiteBrowserAction.java:322)
    at org.sakaiproject.site.tool.SiteBrowserAction.buildMainPanelContext(SiteBrowserAction.java:182)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at org.sakaiproject.cheftool.VelocityPortletPaneledAction.toolModeDispatch(VelocityPortletPaneledAction.java:393)
    at org.sakaiproject.cheftool.ToolServlet.doGet(ToolServlet.java:227)
    at org.sakaiproject.cheftool.VelocityPortletPaneledAction.doGet(VelocityPortletPaneledAction.java:1006)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    at org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:56)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
    at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:555)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:359)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
    at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:441)
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1099)
    at org.sakaiproject.portal.charon.handlers.ToolHandler.doTool(ToolHandler.java:163)
    at org.sakaiproject.portal.charon.handlers.ToolHandler.doGet(ToolHandler.java:86)
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPortal.java:718)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
    at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:592)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
    at java.lang.Thread.run(Thread.java:595)


Herramienta:
Sin Ubicación


Petición:
:    Tipo de autorización:null
:    Codificación:UTF-8
:    Longitud del contenido:0
:    Tipo de contenido:null
:    Path de contexto:/portal
:    Dirección Local:null
:    Nombre Local:investigacion.udgvirtual.udg.mx
:    Puerto Local:80
:    Método:GET
:    Información del path:/tool/!gateway-410
:    Protocolo:HTTP/1.1
:    Cadena de petición (QueryString):panel=Main
:    Dirección Remota:189.133.209.217
:    Host Remoto:189.133.209.217
:    Puerto Remoto:-1
:    Usuario Remoto:null
:    Sesión solicitada:20496db7-d7f7-4c74-8015-30bbbf5ecdf9.labproy
:    URL solicitada:http://investigacion.udgvirtual.udg.mx/portal/tool/!gateway-410<http://investigacion.udgvirtual.udg.mx/portal/tool/%21gateway-410>
:    Esquema:http
:    Nombre del servidor:investigacion.udgvirtual.udg.mx
:    Encabezado:
:        Encabezado:host:investigacion.udgvirtual.udg.mx
:        Encabezado:user-agent:Mozilla/5.0 (Windows; U; Windows NT 6.0; es-ES; rv:1.9.2) Gecko/20100115 Firefox/3.6
:        Encabezado:accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
:        Encabezado:Accept-Language:es-es,es;q=0.8,en-us;q=0.5,en;q=0.3
:        Encabezado:Accept-Encoding:gzip,deflate
:        Encabezado:Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.7
:        Encabezado:Keep-Alive:115
:        Encabezado:connection:keep-alive
:        Encabezado:referer:http://investigacion.udgvirtual.udg.mx/portal/site/!gateway/page/!gateway-400<http://investigacion.udgvirtual.udg.mx/portal/site/%21gateway/page/%21gateway-400>
:        Encabezado:cookie:__utma=63661803.483578519.1268250441.1268869503.1268921326.15; __utmz=63661803.1268921326.15.9.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=universidad%20de%20guadalajara; __utma=178999008.1738478912.1268272949.1268872814.1268921327.16; __utmz=178999008.1268921327.16.15.utmcsr=udg.mx|utmccn=(referral)|utmcmd=referral|utmcct=/; __utmc=63661803; __utmc=178999008; JSESSIONID=20496db7-d7f7-4c74-8015-30bbbf5ecdf9.labproy
:        Encabezado:content-length:0
:    Parámetros:
:        Parámetro:panel:0:Main
:    Atributos:
:        Atributo:tool.url.manager:org.sakaiproject.portal.util.ToolURLManagerImpl at 72c31f
:        Atributo:sakai.session:org.sakaiproject.tool.impl.SessionComponent$MySession at 7bbcbe37
:        Atributo:sakai.html.head.css.base:<link href="/library/skin/tool_base.css" type="text/css" rel="stylesheet" media="all" />

:        Atributo:sakai.character.encoding.done:sakai.character.encoding.done
:        Atributo:sakai.html.head.js:<script type="text/javascript" language="JavaScript" src="/library/js/headscripts.js"></script>

:        Atributo:sakai.html.head:<link href="/library/skin/tool_base.css" type="text/css" rel="stylesheet" media="all" />
<link href="/library/skin/avii/tool.css" type="text/css" rel="stylesheet" media="all" />
<script type="text/javascript" language="JavaScript" src="/library/js/headscripts.js"></script>

:        Atributo:sakai.html.body.onload:setMainFrameHeight('Mainxgatewayx410');setFocus(focus_path);
:        Atributo:sakai.filtered:sakai.filtered
:        Atributo:sakai.html.head.css.skin:<link href="/library/skin/avii/tool.css" type="text/css" rel="stylesheet" media="all" />

:        Atributo:sakai.html.head.css:<link href="/library/skin/tool_base.css" type="text/css" rel="stylesheet" media="all" />
<link href="/library/skin/avii/tool.css" type="text/css" rel="stylesheet" media="all" />

Sesión:
:    Creado:1268930619213
:    Último acceso:1268930626682
:    MaxInactivo:3600
:    Atributos:
:        Atributo:portalskin:defaultskin



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