I am using a hashMap for my facts. That is I actually have all the facts in one big hashMap. Drools treats the hashMap as one fact and whenever I update this hashMap, all the rules are executed again and again. Would are the best way to solve this problem. I can use no-loop, but it has its draw back. -- View this message in context: http://drools.46999.n3.nabble.com/infinite-loop-rule-execution-tp4027980.... Sent from the Drools: User forum mailing list archive at Nabble.com.