anonymous wrote : the api would have to be reduced to the intersection of what hibernate, jpa, ibatis and all other potential persistent stores would offer. Tom, do we really need anything else than the intersection in jBPM 4? Even Seam manages to do with JPA only... anonymous wrote : it would be impossible to do the QA on a matrix of JDK, DB and persistence framework [/quote | Totally true, but we open the door for other folks to do their QA on something other than Hibernate. In jBPM 3 it is just impossible to replace Hibernate without rewriting half of the product. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4204390#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...