This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
You don't set an object to null, you set a reference to null. The reference in the session is set to null, whether or not the object you attached to a session is GCed when you remove it depends on if other references exist. Bill