HI,
Quote from IBM RED BOOK SG426176.pdf
"
In order for the WebSphere session manager to persist a session to the database, all of the
Java objects in an HttpSession must be serializable (that is,implement the java.io.Serializable interface). The HttpSession can also contain the
J2EE objects which are not serializable:
* javax.ejb.EJBObject
* javax.ejb.EJBHome
* javax.naming.Context
* javax.transaction.UserTransaction
"
UNQUOTE
This what u want to ask or something else.