no, it won't be applied to side-effect nodes - perhaps one way to do this is to create the "side effect nodes" explicitly with the option? :-( Regarding the metadata, I see it more as an internal API rather than a public one. I.e., changes are made explicitly to a node - e.g., node.setResident( true ) and internally, this flag is stored in a MetaData object which is persisted/replicated along with the node. And regarding OL (and PL) I see these as being deprecated in 3.0. I would expect folk to focus on MVCC as I think this is far better thought out and conceptually more correct than either of the previous locking schemes. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4168498#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...