Do I need to setup HADB if I want to support HttpSession state failover?

I am using Sun JES 2005Q4. My quesion is if I want to replicate HttpSession state across nodes in a sun appserver cluster, do I need to setup HADB?I am not using stateful session beans, using Spring, Hibernate and JSF.thanks,Nasrin
[259 byte] By [Nasrina] at [2007-11-26 15:00:27]
# 1

It depends on how you want to reprecate the session btwn instances or cluters

there are three kinds File System, Memory to Memory, HA

You can configure it from this property in the admin console

Configuration on a cluster -> Availability Service-> Web Container Availability -> Persistence Type:

skoizumi2133a at 2007-7-8 8:49:17 > top of Java-index,Application & Integration Servers,Application Servers...