ProcessDefinitions are the description of a process and the ProcessInstance holds the runtime state. Does this mean ProcessDefinitions can be shared across all users's process instances? We're using serialization for in-memory-cache persistence and we're trying to figure out if we can disconnect the process definitions before serialization and reconnect them after deserialization. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4172401#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...