Wenbo, I totally miss your point (could be me) but 'many instances of the same deployment' is no problem with jBPM since it is deployed to a DB. I aslo do not see what you mean by 'upgrading 100s mySQL db' for which you think you need a file basaed app-app interface (what is that?) Besides that, I disagree that a command line interface completes a product. IMO it is 'old-school', but that is mu opinion and not necessarily that of jBPM View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3967760#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...