Invalidating HttpSession in portlet

Hi
I have a requirement to use dynamic JDBC credentials with an ADF portlet. However, to use dynamic credentials, the HttpSession has to be invalidated to signal ADF to use new credentials. When I invalidate the session, I get errors in the app log about "No Provider Sesssion".
Is there any way to achieve this, as this functionality is absolutely required.

<quote>some_context <quote>
..will be the pageContext
which is the implicit object for a JSP.
or
use config object to get this context and then use
<jsp:include> or <@include file>
rgds
http://lokeshpant.blogspot.com

Similar Messages

JSTL, HttpSession and Portlet Session

Here's a mysterious problem.
I am trying to use portlet with JSP together. Inside the portlet, I populate some data, put the data into portlet session and dispatch (include) to a jsp. On the jsp, if I use JSTL to access the http session data:
<c:out value="{sessionScope.test}"/> I got the following excepiton:
14:27:08,880 ERROR StandardWrapper[portlet:jsp]:727 - Servlet.service() for se
vlet jsp threw exception
java.lang.IllegalStateException: Cannot access session scope in page that does
ot participate in any session
at org.apache.jasper.runtime.PageContextImpl.doGetAttribute(PageContext
mpl.java:264)
at org.apache.jasper.runtime.PageContextImpl.getAttribute(PageContextIm
l.java:249)
at org.apache.taglibs.standard.lang.jstl.ImplicitObjects$3.getValue(Imp
icitObjects.java:633)
If I use jsp scriptlet to access the http session, everything is fine:
<%= request.getSession("test") %>
Has anyone seen this exception? I posted the question on portlet forum already and no one is able to answer it so far.
What's the different between JSTL sessionScope and jsp scriptlet?
thanks!

Try the calls
<%= session.getAttribute("test") %>
and
<%= request.getSession().getAttribute("test") %>
Make sure do not have on your page anywhere:
<%@ page session="false" %>

How do I connect to the backend database?

I have both the infrastructure and the mid-tier installed on the same machine. I have created an omniportlet with specific connection information (username/password/connection info) to connect to a back-end (customer) database. Is this the correct methodology to use for connecting to the back-end database? I am concerned that when the portlet is moved to a production system then the connection information will be invalid and the portlet will not work.
Also, I have created a dblink to the backend database in the PORTAL schema, which exists in the iasdb (also sometimes referred to as the infrastructure repository, infrastructure instance). The iasdb obviously also holds the metadata repository. I can use this link within a DAD to connect to the backend database. My intention was to use this link to get round the problem of invalid connection info when the development system is moved to production, but the link does not work with omniportlets.
I am confused as to how the backend database is connected to by OAS. Can someone please explain to me how this is done in a system which has separate machines for client, infrastructure, middle (portal) tier and backend database?

Managed to figure out that I just have to let tnsnames resolve this issue.

LogOut a user who loggin with Using j_security_check

Hi, I try to log out a user that log in with j_security_check. I use ADF Faces technology, and I need help to log out a user. I try to access to LoginContext from call logout() metod, but it´s imposible, I don´t know how do this.
Please, anyone can HELP ME???
Regards.

Did you try creating a logout.jsp to handle your logout, or something similar via session invalidation:
HttpSession session = request.getSession(true);
if (session != null)session.closeSessions();
session.invalidate();

Using Callback handelr to get Username

For my JSF project I have a httpSessionListener which works fine on session Timeout.
In the sessionDestroyed() method I have to get the User name of the user that was timed out.
I have to use Call back handler for that. The problem is that i am always getting the username as null and also the callback handler is null.
My listener class is as follows :
public class myHttpSessionListener extends DBTableOraDataSourceLoginModule implements HttpSessionListener
// callback handler settings
static final int NUM_CALLBACKS = 2;
static final int USERNAME_CALLBACK_INDEX = 0;
static final int PASSWORD_CALLBACK_INDEX = 1;
String username = null; protected CallbackHandler callbackHandler = super._callbackHandler;
public void sessionDestroyed(HttpSessionEvent sessionEvent)
// Get the session that was invalidated
HttpSession session = sessionEvent.getSession();
if (callbackHandler == null)
Utility.logMessage(Constants.SEVERITY_INFO,
"******* CallBack Handler is NULL ********", this);
Callback[] callbacks = new Callback[NUM_CALLBACKS];
callbacks[USERNAME_CALLBACK_INDEX] = new NameCallback("Username");
callbacks[PASSWORD_CALLBACK_INDEX] = new PasswordCallback("Password:",false);
try
callbackHandler.handle(callbacks);
username =
((NameCallback) callbacks[USERNAME_CALLBACK_INDEX]).getName();
catch (UnsupportedCallbackException e)
Utility.logMessage(Constants.SEVERITY_INFO,
"^^^^^^^^^ UnsupportedCallbackException() ********" + e , this);
catch (IOException ie)
Utility.logMessage(Constants.SEVERITY_INFO,
"^^^^^^^^^ IOException() ********" + ie , this);
Utility.logMessage(Constants.SEVERITY_INFO,
"SessionDestroyed() ******** UserName = " + username , this);
}Thanks in advance .....

In java we have one method of System class to get the properties of system.
System.getProperty(String propName)
To get the user name , we can use the property name : user.name
System.getProperty("user.name")
which returns the current working user name of the system..
try it out.
Regards

Obtains a list of session ID

Hello,
I would like obtains a list of active session (session id) on weblogic.
Is it possible?
Thanks!

Hi,
There is no way to list all the sessionIds present in weblogic server.
But you need to implement your own mechanism where you can retrieve all the session IDs. For this you need to implement HttpSessionListener where when ever you create a session store the session id in ArrayList and when ever the session is destroyed remove from the ArrayList and this ArrayList will have the sessionids present in weblogic server. Please find the implementation below.
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Map;
import java.util.HashMap;
public class ListenerSession
implements HttpSessionListener {
public List sessionIDList = new ArrayList();
public ListenerSession() {
public void sessionCreated(HttpSessionEvent sessionEvent) {
// Get the session that was created
HttpSession session = sessionEvent.getSession();
sessionIDList.add(session.getId);
public void sessionDestroyed(HttpSessionEvent sessionEvent) {
// Get the session that was invalidated
HttpSession session = sessionEvent.getSession();
sessionIDList.remove(session.getId);
Please let me know if you face any issues in implemention Listeners.
Thanks & Regards,
Murali.
===========

Help needed in Invalidating jpdk portlets

I have a simple JSP page that is deployed as a portlet with Invalidation caching enabled.
When it is run,the following is the entry in webcache/logs/events_log that shows indicates that the cache has taken place.
08/Jan/2003:15:12:14 +0000 -- cache inserted one file '/incq222bd.idc.oracle.com:7777/jpdk/providers/ POST;;_about=1&_action=showPortlet&_auth_level=10&_back_url=null&_backurl=http%3A%2F%2Fincq222bd.idc.oracle.com%3A7777%2Fportal%2Fpage%3F_pageid%3D33%2C31611%26_dad%3Dportal%26_schema%3DPORTAL&_border=1&_collapse=1&_collapsed=0&_company_name=idc&_dad=portal&_dad=portal&_debug=1&_design_url=http://incq222bd.idc.oracle.com:7777/portal/page?_dad=portal&_details=1&_edit=1&_eurl=http://incq222bd.idc.oracle.com:7777/portal/event?_pageid=33,31611&_has_title=1&_help=1&_instance_name=1947_MYEMPJSPPORTLET_3933781&_login_url=http://incq223bd.idc.oracle.com:7777/pls/orasso/orasso.wwsso_app_admin.fapp_process_login?p_app_id=&_page_url=http://incq222bd.idc.oracle.com:7777/portal/page?_pageid=33,31611&_portal_config=1&_portal_id=39337&_portlet_id=1&_portlet_ref=33_31612_33_31611&_portletid=1&_pref=33_31612_33_31611&_pref=33_31612_33_31611&_provider_id=3933781&_provider_name=EMP_222[i]Long postings are being truncated to ~1 kB at this time.

Your posting seems to have been truncated by the Forums software.
Anyway, I suggest that you repost your question in shorter form.
Just so you know, there is a discussion forum on OTN dedicated solely to Portal Caching issues (Portal's use of Web Cache.) From what I can see from your first posting attempt, your question might be more suited to the Portal Caching forum.

Java.lang.IllegalStateException: HttpSession is invalid problem

Hi,
I get randomly in my application "java.lang.IllegalStateException: HttpSession
is invalid" exception thrown when I call getAttribute() method on a HttpSession
instance.
weblogic.servlet.internal.session.SessionData.getAttribute(SessionData.java:410)
Any feedback to avoid this problem is greately appreciated

Hi Eddy,
"Eddy Vina" <[email protected]> wrote in message news:3fbc46c2$[email protected]..
I get randomly in my application "java.lang.IllegalStateException: HttpSession
is invalid" exception thrown when I call getAttribute() method on a HttpSession
instance.
weblogic.servlet.internal.session.SessionData.getAttribute(SessionData.java:410)
Any feedback to avoid this problem is greately appreciatedThis happens because getAttribute(...) is called on an invalidated
session. The session could have timed out or been invalidated
explicitly by the moment the call was made.
That may happen if you "cache" session objects.
Hope this helps.
Regards,
Slava Imeshev

Portlet Invalid handle exception -- URGENT PLEASE HELP

I am deploying our Portal application and portlets in a clustered environment. We have three machines and following weblogic servers are started in each machine:
Machine1 - Admin Server
Machine2 - Portal1, Portlet1
Machine3 - Portal2, Portlet2
Portlets are deployed on portlet servers (portlet 1 and portlet 2). When I deployed the Portal application I intentionally registered portlet producer pointing to 127.0.0.1:8889, thinking that it will work for both portals since the portlet server is in same machine as well..
So my assumption is :
Portal1 will always load portlet from Portlet1 server and
Portal2 will always load portlet from Portlet2 server
but I am getting following error now... don;t have a clue what to do.. This is very urgent, I am working over the weekend over this.. any help would be highly appreciated..
Line: -----
<Apr 23, 2011 6:17:07 PM EDT> <Error> <oracle.portlet.client.connection.wsrp.HTTPClientTransport> <WCS-40152> <A request to the producer URL "http://127.0.0.1:8889/ApplicationAccess/portlets/WSRP_v2_Markup_Service" resulted in a status 500 response with fault string "Invalid handle "C:f5163bc7-4caa-4d4f-b031-cf475ecd099f".; nested exception is:
     oracle.portlet.producer.container.ContainerObjectNotFoundException: Object named "registration" could not be found in the persistent store.". The fault code given was "{urn:oasis:names:tc:wsrp:v2:types}InvalidRegistration". The producer generated a timestamp of 2011-04-23T18:17:06.217-04:00 and associated the following stack trace with the fault message: com.bea.wsrp.faults.InvalidRegistrationException: Invalid handle "C:f5163bc7-4caa-4d4f-b031-cf475ecd099f".; nested exception is:
     oracle.portlet.producer.container.ContainerObjectNotFoundException: Object named "registration" could not be found in the persistent store.
     at com.bea.wsrp.producer.handlers.management.ProducerDataStoreManager$ConfigurationContext.createWsrpFaultException(ProducerDataStoreManager.java:1481)
     at oracle.portlet.producer.container.persistence.WsrpFaultExceptionFactory.createWsrpFaultException(WsrpFaultExceptionFactory.java:43)
     at oracle.portlet.producer.container.persistence.PersistentProducerDataStore.getRegistrationDataContext(PersistentProducerDataStore.java:205)
     at oracle.portlet.producer.container.persistence.ProducerDataStoreImpl.getRegistrationDataContext(ProducerDataStoreImpl.java:225)
     at com.bea.wsrp.producer.handlers.management.ProducerDataStoreManager.initializeRequestContext(ProducerDataStoreManager.java:242)
     at com.bea.wsrp.producer.handlers.management.ProducerDataStoreManager.initializeRegistration(ProducerDataStoreManager.java:210)
     at com.bea.wsrp.producer.handlers.RegistrationHandleFilter.doFilter(RegistrationHandleFilter.java:56)
     at com.bea.wsrp.producer.handlers.AbstractServiceHandler.preprocess(AbstractServiceHandler.java:108)
     at com.bea.wsrp.producer.handlers.AbstractServiceHandler.service(AbstractServiceHandler.java:65)
     at com.bea.wsrp.producer.container.ProducerEndPoint.processNow(ProducerEndPoint.java:349)
     at com.bea.wsrp.producer.container.ProducerEndPoint.processNow(ProducerEndPoint.java:250)
     at com.bea.wsrp.producer.container.ProducerEndPoint.processNow(ProducerEndPoint.java:208)
     at oracle.portlet.server.adapter.web.WSRP_v2_Markup_PortTypeSoapToEndpoint.initCookie(WSRP_v2_Markup_PortTypeSoapToEndpoint.java:281)
     at oasis.names.tc.wsrp.v2.bind.runtime.WSRP_v2_Markup_Binding_SOAP_Tie.invoke_initCookie(WSRP_v2_Markup_Binding_SOAP_Tie.java:295)
     at oasis.names.tc.wsrp.v2.bind.runtime.WSRP_v2_Markup_Binding_SOAP_Tie.processingHook(WSRP_v2_Markup_Binding_SOAP_Tie.java:1448)
     at oracle.j2ee.ws.server.StreamingHandler.handle(StreamingHandler.java:299)
     at oracle.j2ee.ws.server.JAXRPCProcessor.doEndpointProcessing(JAXRPCProcessor.java:442)
Line: -----
Regards,
sak007
Edited by: user469829 on Apr 23, 2011 4:23 PM

Sak007,
Did u get the solution for this issue? I am also facing the similar kind of issue.
I have a portal server, that consumes the remote portlet which is deployed on a cluster environment (Server1 and Server2). When i register my remote portlet, sometimes the registration handle holds info about server1 and sometimes it is server2. When the registration handle holds info about Server1, my application is working fine in the portal. Whereas when the registration handle holds the info about Server2. It throws the exception as:
Invalid handle "C:10.10.0.42:-a3eb70c:130d71f8067:-7ff9".[[
oracle.portlet.server.containerimpl.ContainerObjectNotFoundException: Object named "registration" could not be found in the persistent store.
at oracle.portlet.server.containerimpl.persistence.SimplePersistentStorage.get(SimplePersistentStorage.java:47)
Any pointers will be helpful.
Note: I have visited the URl posted in above thread and it doesn't solve the issue.
Thanks.

HttpSession is invalid error on weblogic server 12.1.2

Hello,
We are using weblogic server 12.1.2. We have 6 J2EE applications are installed on that weblogic server. we are seeing "HttpSession is invalid". Here is the stack trace.
<BEA-100025> <An unexpected error occurred in the HTTP session timeout callback while deleting sessions.
java.lang.IllegalStateException: HttpSession is invalid
at weblogic.servlet.internal.session.SessionData.getInternalAttribute(SessionData.java:650)
at weblogic.servlet.internal.session.SessionData.getInternalAttribute(SessionData.java:645)
at weblogic.servlet.internal.session.SessionData.hasSavedPostData(SessionData.java:865)
at weblogic.servlet.internal.session.SessionContext$SavePostSessionInvalidator.shouldIgnoreChecking(SessionContext.java:767)
at weblogic.servlet.internal.session.SessionContext$SessionInvalidator.cleanupExpiredSessions(SessionContext.java:699)
at weblogic.servlet.internal.session.SessionContext$SessionInvalidator$1.run(SessionContext.java:620)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
at weblogic.servlet.internal.session.SessionContext$SessionInvalidator.timerExpired(SessionContext.java:615)
at weblogic.timers.internal.TimerImpl.run(TimerImpl.java:304)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:550)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:254)
Any Idea why we are getting this error?

subscribed.

Weblogic.servlet.security.ServletAuthentication.week() throws 'HttpSession in invalid'

+In our web app, we supply a form to accept the user info and login the
          user. The following is the program.
          String uid = (String )request.getParameter( "username" ) ;
          String pwd = (String )request.getParameter( "password" ) ;
          ServletAuthentication.logout( request ) ;
          request.getSession().invalidate();
          HttpSession session = request.getSession( true ) ;
          session.setAttribute( ..... ) ;
          int auth = ServletAuthentication.weak( uid, pwd, request ) ;
          +But an exception of "java.lang.IllegalStateException: HttpSession is
          invalid" is thrown by the last statement. What's wrong with the above
          program?
          Thanks for any help!


+In our web app, we supply a form to accept the user info and login the
          user. The following is the program.
          String uid = (String )request.getParameter( "username" ) ;
          String pwd = (String )request.getParameter( "password" ) ;
          ServletAuthentication.logout( request ) ;
          request.getSession().invalidate();
          HttpSession session = request.getSession( true ) ;
          session.setAttribute( ..... ) ;
          int auth = ServletAuthentication.weak( uid, pwd, request ) ;
          +But an exception of "java.lang.IllegalStateException: HttpSession is
          invalid" is thrown by the last statement. What's wrong with the above
          program?
          Thanks for any help!

HttpSession Invalid error

I am getting the following error in weblogic. please any one can give solution for this
thaking you
Rajesh.J
java.lang.Exception: Problem with X509 certificate: fingerprint = 56b7dfac29e39c21027973c248d8c1bb, not before = Tue May 30 17:38:01 EDT 2000, not after = Thu May 13 17:38:01 EDT 2004, holder = C=US SP=California L=San Francisco O=BEA WebLogic CN=weblogic.bea.com [email protected] , issuer = C=US SP=California L=San Francisco O=BEA WebLogic OU=Security CN=Demo Certificate Authority [email protected] , key = modulus length=65 exponent length=3, java.lang.Exception: Certificate expired or not yet valid: fingerprint = 56b7dfac29e39c21027973c248d8c1bb, not before = Tue May 30 17:38:01 EDT 2000, not after = Thu May 13 17:38:01 EDT 2004, holder = C=US SP=California L=San Francisco O=BEA WebLogic CN=weblogic.bea.com [email protected] , issuer = C=US SP=California L=San Francisco O=BEA WebLogic OU=Security CN=Demo Certificate Authority [email protected] , key = modulus length=65 exponent length=3
     at weblogic.t3.srvr.SSLListenThread.insertIntoCAChain(SSLListenThread.java:291)
     at weblogic.t3.srvr.SSLListenThread.<init>(SSLListenThread.java:415)
     at weblogic.t3.srvr.SSLListenThread.<init>(SSLListenThread.java:301)
     at weblogic.t3.srvr.T3Srvr.initializeListenThreads(T3Srvr.java:1064)
     at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:492)
     at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:202)
     at weblogic.Server.main(Server.java:35)
Country Code = CL
Language Code = es
Website Id = GMCGBP
java.lang.IllegalStateException: HttpSession is invalid
     at weblogic.servlet.internal.session.SessionData.getAttribute(SessionData.java:376)
     at com.gm.fusion.process.action.VCStartAction.fusionPerform(VCStartAction.java:237)
     at com.gm.process.framework.FusionBaseAction.perform(FusionBaseAction.java:267)
     at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1787)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at com.gm.process.framework.FusionMainServlet.service(FusionMainServlet.java:103)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
     at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:241)
     at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1759)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1596)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at com.gm.process.framework.FusionMainServlet.service(FusionMainServlet.java:103)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
     at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2495)
     at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2204)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

Hi Rajesh,
seeing that the exception is "Certificate expired or not yet valid", the certification expiration
date is "Thu May 13 17:38:01 EDT 2004" and your posting was made on June 2nd, I would
venture that you tried to use the certificate after its expiration date.
Best regards,
Gerd Hillebrand

Invalid Handle Error for WSRP Struts Portlet

Hi,
I am in process of modifying our existing struts application so that I can access it as remote portlet. I followed the Integrating Existing Struts Application guide and created a portlet. When I tried to use this portlet, I started getting following error. Does anyone know where I might be going wrong? Thanks.
Fault: {urn:oasis:names:tc:wsrp:v1:types}InvalidHandle
The given portletHandle [portlet_1] is invalid or none of the supported portlet containers can handle this portlet.
2005-04-22T16:32:08.282+01:00com.bea.wsrp.faults.InvalidHandleException: The given portletHandle [portlet_1] is invalid or none of the supported portlet containers can handle this portlet. at com.bea.wsrp.producer.handlers.markup.MarkupServiceHandler.doGetMarkup(MarkupServiceHandler.java:407) at com.bea.wsrp.producer.handlers.markup.MarkupServiceHandler.doService(MarkupServiceHandler.java:306) at com.bea.wsrp.producer.handlers.markup.MarkupServiceHandler.doService(MarkupServiceHandler.java:282) at com.bea.wsrp.producer.handlers.AbstractServiceHandler.service(AbstractServiceHandler.java:78) at com.bea.wsrp.producer.handlers.markup.MarkupServiceHandler.service(MarkupServiceHandler.java:262) at com.bea.wsrp.producer.WsrpServer.processServiceRequest(WsrpServer.java:299) at com.bea.wsrp.producer.WsrpServer.service(WsrpServer.java:198) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27) at com.bea.wsrp.producer.adapter.pageflow.WsrpPageflowFilter.doFilter(WsrpPageflowFilter.java:73) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)

Hi Shanta,
I have started writing a struts 1.1 based module and expose it as a wsrp portlet. Can you pls help me where and how to start on this?
Thanks,
Ravi

How to enable invalidation cache in struts portlet?

Dear Friends,
I am in need of implementing invalidation based caching in my pdk struts portlet application. The sample in the jpdk is for normal pdk portlets (not struts.) and the code did not work for my application. Plz help.
Many thanks,
Alvi

In the [Licensing document|http://download.oracle.com/docs/cd/E11882_01/license.112/e10594/editions.htm#CJACGHEB] , in the 'performance' section of the table, the result cache is only available on Enterprise and not Standard, so I wouldn't expect it to work in Express Edition

WLS hang after java.lang.IllegalStateException: HttpSession is invalid occured

Hi, all:
I often got messages like below and server going to hang after got these message.
####<2004/6/15 PM time > <Error> <Kernel> <xxx.xxx.com.tw> <myserver> <ExecuteThread:
'18' for queue: 'default'> <> <> <000000> <ExecuteRequest failed>
java.lang.IllegalStateException: HttpSession is invalid
at weblogic.servlet.internal.session.SessionData.getAttribute(SessionData.java:162)
at weblogic.servlet.internal.session.SessionData.getValue(SessionData.java:134)
at weblogic.servlet.internal.ServletRequestImpl.getRemoteUser(ServletRequestImpl.java:814)
at weblogic.servlet.logging.CLFLogger.log(CLFLogger.java:60)
at weblogic.servlet.logging.LogManagerHttp.log(LogManagerHttp.java:293)
at weblogic.servlet.internal.HttpServer.log(HttpServer.java:670)
at weblogic.servlet.internal.ServletResponseImpl.send(ServletResponseImpl.java:851)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1636)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
I know 6.0 SP2 is stop-continued, but it's still production server before we upgrade
it.
did any one can told me what should I modify or set ?
Thanks for any response.

Hi Eddy,
"Eddy Vina" <[email protected]> wrote in message news:3fbc46c2$[email protected]..
I get randomly in my application "java.lang.IllegalStateException: HttpSession
is invalid" exception thrown when I call getAttribute() method on a HttpSession
instance.
weblogic.servlet.internal.session.SessionData.getAttribute(SessionData.java:410)
Any feedback to avoid this problem is greately appreciatedThis happens because getAttribute(...) is called on an invalidated
session. The session could have timed out or been invalidated
explicitly by the moment the call was made.
That may happen if you "cache" session objects.
Hope this helps.
Regards,
Slava Imeshev

Invalidating HttpSession in portlet

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