Why and when to perform this task
Migrating from Version 5.x
No programmatic changes are required to migrate from version 5.x to version 6.
When you migrate between releases of WebSphere Application
Server Version 5.x and later and you are using a database for session persistence,
you can share the session database table between releases. For example, if
you are accessing applications that are on WebSphere Application Server version
5, you can share the session id with applications running on Version 6.
Migrating from Version 4.0
No programmatic changes are required to migrate from version 4.0.x to version 6.
Related tasks
Assembling so that session data can be shared