Running on JSF 2.0.9, Weblogic 10.3.4. We\'re now running JSF in our production environment but have encountered some issues with Session Replication and fail over. We are
The session replication should be handled by the load balancer as the JSF application is only aware of the context on the node that it is deployed to. As such, it shouldn't matter if you set the STATE_SAVING_METHOD to client or server.
It sounds to me like you have an incorrect load balancer configuration. If you're using Apache HTTP Server as your proxy please see the following link for more information on session stickyness:
http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html
I would recommend setting ProxySet stickysession=ROUTEID and see if that resolves the issue.