HTTP Session Replication

Question

Hi!
I'm trying to setup a cluster between two managed servers located on the same server. The following configuration is about my cluster. I just removed the secutiry element:
*<?xml version='1.0' encoding='UTF-8'?>*
*<domain xmlns="http://xmlns.oracle.com/weblogic/domain" xmlns:sec="http://xmlns.oracle.com/weblogic/security" xmlns:wls="http://xmlns.oracle.com/weblogic/security/wls" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.oracle.com/weblogic/security/xacml http://xmlns.oracle.com/weblogic/security/xacml/1.0/xacml.xsd http://xmlns.oracle.com/weblogic/security/providers/passwordvalidator http://xmlns.oracle.com/weblogic/security/providers/passwordvalidator/1.0/passwordvalidator.xsd http://xmlns.oracle.com/weblogic/domain http://xmlns.oracle.com/weblogic/1.0/domain.xsd http://xmlns.oracle.com/weblogic/security http://xmlns.oracle.com/weblogic/1.0/security.xsd http://xmlns.oracle.com/weblogic/security/wls http://xmlns.oracle.com/weblogic/security/wls/1.0/wls.xsd">*
*<name>caim</name>*
*<domain-version>10.3.2.0</domain-version>*
*<server>*
*<name>AdminServer</name>*
*<machine></machine>*
*<listen-address></listen-address>*
*</server>*
*<server>*
*<name>ManagedServer_1</name>*
*<machine></machine>*
*<listen-port>7003</listen-port>*
*<cluster>Cluster_1</cluster>*
*<listen-address></listen-address>*
*<server-start>*
*<arguments>-Djava.endorsed.dirs=C:\endorsed</arguments>*
*<password-encrypted>{AES}7iyQ50j7+efCMMUTHrSPcELzY9wjcge0W0Gp/HH3j9E=</password-encrypted>*
*</server-start>*
*<jta-migratable-target>*
*<name>ManagedServer_1</name>*
*<user-preferred-server>ManagedServer_1</user-preferred-server>*
*<cluster>Cluster_1</cluster>*
*</jta-migratable-target>*
*</server>*
*<server>*
*<name>ManagedServer_2</name>*
*<machine></machine>*
*<listen-port>7004</listen-port>*
*<cluster>Cluster_1</cluster>*
*<listen-address></listen-address>*
*<server-start>*
*<arguments>-Djava.endorsed.dirs=C:\endorsed</arguments>*
*<password-encrypted>{AES}PC7yN6hCVA3N6lMn2AyZgJu0pGcv4K5XUDUMmWMNE5Q=</password-encrypted>*
*</server-start>*
*<jta-migratable-target>*
*<name>ManagedServer_2</name>*
*<user-preferred-server>ManagedServer_2</user-preferred-server>*
*<cluster>Cluster_1</cluster>*
*</jta-migratable-target>*
*</server>*
*<cluster>*
*<name>Cluster_1</name>*
*<cluster-messaging-mode>unicast</cluster-messaging-mode>*
*</cluster>*
*<production-mode-enabled>true</production-mode-enabled>*
*<embedded-ldap>*
*<name>caim</name>*
*<credential-encrypted>{AES}BQResE+Zs6gOOTGLqF3T70xcLs3AVw2F7+7sNKLdb2T+QE3cx+zHFlO0RQyBAZy1</credential-encrypted>*
*</embedded-ldap>*
*<configuration-version>10.3.2.0</configuration-version>*
*<app-deployment>*
*<name>app</name>*
*<target>ManagedServer_1</target>*
*<module-type>war</module-type>*
*<source-path>C:\WebLogic\app</source-path>*
*<deployment-order>100</deployment-order>*
*<security-dd-model>DDOnly</security-dd-model>*
*</app-deployment>*
*<app-deployment>*
*<name>app2</name>*
*<target>ManagedServer_2</target>*
*<module-type>war</module-type>*
*<source-path>C:\WebLogic\app2</source-path>*
*<security-dd-model>DDOnly</security-dd-model>*
*</app-deployment>*
*<machine>*
*<name></name>*
*<node-manager>*
*<name></name>*
*<listen-address></listen-address>*
*</node-manager>*
*</machine>*
*<migratable-target>*
*<name>ManagedServer_1 (migratable)</name>*
*<notes>This is a system generated default migratable target for a server. Do not delete manually.</notes>*
*<user-preferred-server>ManagedServer_1</user-preferred-server>*
*<cluster>Cluster_1</cluster>*
*</migratable-target>*
*<migratable-target>*
*<name>ManagedServer_2 (migratable)</name>*
*<notes>This is a system generated default migratable target for a server. Do not delete manually.</notes>*
*<user-preferred-server>ManagedServer_2</user-preferred-server>*
*<cluster>Cluster_1</cluster>*
*</migratable-target>*
*<admin-server-name>AdminServer</admin-server-name>*
*</domain>*
I do not see any log about http session replication and when I stop the managed server that is handling the requests, the application is redirected to the login page, i.e., there's no session replication.
Need I to do something more than create the cluster and add the managed servers to the cluster?
Is it possible to enable the logging to the session replication?
Best Regards,
A.

Answer 1

Please refer to : http://jaysensharma.wordpress.com/2009/12/08/session-replication-issues/
To identify Session Replication requirements ...and Causes...
Like *"weblogic.xml"* should contain:
<persistance-type> Tag... Like following:
<font color=maroon>
<session-descriptor>
<persistent-store-type>replicated</persistent-store-type>
</session-descriptor>
</font>
Can you please enable SessionReplication related Debug Flags from AdminConsole....?
Are you using any kind of Proxy/LoadBalancer in front of your Cluster?
Have you ever tried changing default HttpSession Cookie Name from "*JSESSIONID"* to something else?
Thanks
Jay SenSharma