I'm asking because I'm continuously getting exceptions from mine. I get exceptions from the engine when it's expiring events, I get exceptions while inserting objects in my rules, I get them when I insert through a named entry point, I get them for the sin of apparently just having a sliding time window in my rules. They're all wrapped around NullPointerExceptions, and while they don't shut the engine down, they ARE preventing the system from working correctly. None of this happens immediately. In the short-term everything appears to be OK. It's after running for 6+ hours that I start to see this. I'm running with 5.2.0-Final, which I know is not the latest release, but I dropped back to it because, well, I was getting too many failures and exceptions with 5.3.0. I'm not inserting data from another thread. The rules engine is started with fireUntilHalt, and when I have a data backlog to insert into it, I call halt and the same thread that called fireUntilHalt loads the data, then calls fireUntilHalt again. I'm not using MultiThreadEvaluationOption -- which in my experience just generates MORE exceptions than I'm getting now. Nothing older than the event expiration age is being inserted. Any advice? Any examples of a continuously-running Fusion application anyone can share with me? Thanks! -- View this message in context: http://drools.46999.n3.nabble.com/Does-anyone-have-a-Fusion-application-r... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users