Http session replication fails in cluster

Question

Hello everybody.
I have some problems with HTTP session replication in WebLlogic cluster environment. I have a cluster with 2 nodes and application deployed there. Application is configured with:
<session-param>
<param-name>PersistentStoreType</param-name>
<param-value>replicated</param-value>
</session-param>
in weblogic.xml
WebLogic plug-in for Apache webserver is configured properly as described in documentation.
But when I try to make experiment to enter the application, make some activities, look in console where I was redirected by apache proxy and manually shut down the node where request was sent, I loose my HTTP session with all data there (all the beans stored in session are Serializable). Replication doesn't work correctly. May be I've missed something in configuration? How can I configure my application to provide correctness session replication?
Thanks for advice.
Thanks

Answer 1

Thanks for response!
I'm using WebLogic 8.1 SP 4 and configured Apache proxy as described in documentation for load balancing. The only section I have in httpd.conf is next:
<Location /HTTPClnt>
     SetHandler weblogic-handler
</Location>
<IfModule mod_weblogic.c> 
     WebLogicCluster serv1:7541,serv2:7541
     MatchExpression *.*
     Debug ON 
     WLLogFile /www/tmp/global_proxy.log  
     WLTempDir "/www/tmp" 
     DebugConfigInfo On 
     KeepAliveEnabled ON 
     KeepAliveSecs  15
</IfModule>
<Location /myApp> 
     SetHandler weblogic-handler
     WebLogicCluster serv1:7541,serv2:7541
</Location>and the string to include weblogic proxy module for apache:
LoadModule weblogic_module     modules/mod_wl_20.soI've configured CookiesEnabled=true in weblogic.xml, but it didn't help. About session specification in httpd.conf - where can I read about that? I've just configured apache according to manual from here:
[url http://e-docs.bea.com/wls/docs92/plugins/apache.html]http://e-docs.bea.com/wls/docs92/plugins/apache.html
Thanks