I'm not sure on what do you mean by "how to start the engine", but you need to create the DB first (look for instructions for your particular DB vendor in the jBPM manual, chapters 5-8); obviously, you don't need to read the whole chapters, but the parts you're interested in. Also, you can look in the forum, as this "how to deploy jBPM in another app server" kind of question has been asked (and answered) several times before. I'm using jBPM, and to use it I only need to deploy the jbpm-xxx.jar with my application (or to the lib directory of the app server), then invoke the methods to load the process definition (or recover the process instance if you have the proper id) and that's it, you'll have the engine running. You'll find useful the section 7.1 of the jBPM manual. Regards. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981821#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...