Session-failover-enabled not working in iWS6 with a FileStore

I'm trying to use a FileStore to implement session persistence using IWSSessionManager. I have the following in my web-apps.xml:
<web-app uri="/Banking" dir="c:/java/online">
<session-manager class='com.iplanet.server.http.session.IWSSessionManager'>
<init-param>
<param-name>session-data-store</param-name>
<param-value>com.iplanet.server.http.session.FileStore</param-value>
</init-param>
<init-param>
<param-name>session-data-dir</param-name>
<param-value>c:/iplanet/servers/SessionData</param-value>
</init-param>
<init-param>
<param-name>session-failover-enabled</param-name>
<param-value>false</param-value>
</init-param>
</session-manager>
</web-app>
I'm seeing the following exception in my log:
[12/Jun/2002:10:10:56] info ( 320): java.io.NotSerializableException: com.iplanet.server.http.servlet.WebApplication
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1148)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
at java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1827)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:480)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1214)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
at java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1827)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:480)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1214)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
at java.util.Hashtable.writeObject(Hashtable.java:764)
at java.lang.reflect.Method.invoke(Native Method)
at java.io.ObjectOutputStream.invokeObjectWriter(ObjectOutputStream.java:1864)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1210)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
at com.iplanet.server.http.session.IWSHttpSession.writeObject(IWSHttpSession.java:764)
at java.lang.reflect.Method.invoke(Native Method)
at java.io.ObjectOutputStream.invokeObjectWriter(ObjectOutputStream.java:1864)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1210)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
at com.iplanet.server.http.session.FileStore.save(FileStore.java:167)
at com.iplanet.server.http.session.IWSSessionManager.update(IWSSessionManager.java:499)
at com.iplanet.server.http.servlet.NSHttpServletRequest.closeInputStream (NSHttpServletRequest.java:612)
at com.iplanet.server.http.servlet.NSServletRunner.servicePostProcess(NSServletRunner.java:857)
at com.iplanet.server.http.servlet.NSServletRunner.invokeServletService(NSServletRunner.java:942)
at com.iplanet.server.http.servlet.WebApplication.service(WebApplication.java:1065)
at com.iplanet.server.http.servlet.NSServletRunner.ServiceWebApp(NSServletRunner.java:959)
Any ideas what's wrong?
I should note that I don't think it is because I am storing non-serializable things in the session attributes. I think this because originally I was getting an exception that said that a specific attribute wasn't serializable. I changed the class definition of the class I was storing in that attribute to include "implements java.io.Serializable" and that problem went away.

Hi Sija,
Can i have detailed scenario in your cluster configuration.
Means you are saying that going to start cluster package manually, if it is right please make sure that you had the same copy of start, instance profiles of NodeA to Node B. Means you need to maintain two startup, two instance profiles for both nodes. In a normal situation it will picik the profile of node A to start databse from A node. But in a failover situation it will not pick node A profile to start, it should pick Node B s profiles.
Just make a copy from node A and change the profile name accordingly to Node b. Then try to restart.
Regards
Nick Loy

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