Drools 4.0.7 ------------ Key: DROOLS-931 URL: https://issues.jboss.org/browse/DROOLS-931 Project: Drools Issue Type: Bug Environment: WAS 6.1(JDK 1.5) & WAS 8.5.5(JDK 1.7) Reporter: raj S Assignee: Mario Fusco We have around 10,000+ rules running on a legacy system which is using jdk 1.5. those rules doesn't have salience set for all the rules , but have been tested to work fine with older jdk. Now are trying to upgrade the system to later version of JDK, rules execution order seems to be difference ,because they don't have salience set. in the process we have identified that few rules were having coding issues and corrected them. Issue: is there a way to grantee the same execution order between the jdk 1.5 & JDK 1.7. we haven't updated the drools version just the JDK. can you please give us some insight in to the natural order of rules execution in drools engine so we can put in a fix outside the engine to ensure the same order. any help is appreciated.