"adrian(a)jboss.org" wrote : | So why can't we plugin our own UID implementation directly? As Jonathan has pointed out, this isn't such an easy option. Uid is used throughout the transaction service for a number of different reasons. Replacing it with any alternative implementation would be an invasive process and there are simpler alternative solutions to the problem. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179795#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...