I am using Jboss 4 Server.
Is it possible to configure jboss so that the sessions are stored on a seperate JVM.
I ask this because I am limited with the heap size that I can assign to JBoss ( In my case 1.7 GB). Is it possible to use a memcache/partition map or a separate JBoss cache as a backing store for sessions which are not actively used.

I read about activation/passivation of HTTP Session feature available in JBoss 5. This seems to me as a solution to my problem. However I cannot upgrade to JBoss 5 just yet. Is there a way I can simulate this feature in JBoss 4.

Thanks,
Omkar