Heiko: The schema Tom posted is the table to which currently all 'process events' are persisted. The 'oldvalue - newvalue' columns represent process variable changes. So if a var value changes, the change is reflected in the JBPM_LOG table (do note that jBPM logging can be set off by configuration) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165820#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...