On 12/16/05, Dennis Allison <[EMAIL PROTECTED]> wrote: > MAYBE CONFLICTS AND THEIR RESOLUTION ARE NOT THE ROOT CAUSE OF THE SESSION > VARIABLE PROBLEM. The observed problem is that session variables suddenly > disappear.
Perhaps your app is tripping over some bug in conflict handling. But I'd say it is worth entertain other ideas too. For now, just comment out all of TransientObject._p_resolveConflict and if you still get errors then you know you have to look elsewhere. (Sure, some of that elsewhere may well include the conflict resolution code above _p_resolveConflict.) Your application and sessions should cope just fine in the face of any ConflictError. ConflictError's are an essential part of the machinery that keeps data state consistent. As Chris mentions, look at how your using sessions and some of the assumptions you might be making. Might be useful to try with sessions that don't timeout, set session-timeout-minutes to 0. And try maximum-number-of-session-objects of 0. Also trying the turning those knobs the other way, session-timeout-minutes of 1 and maximum-number-of-session-objects of 2. For now, stay focused on making sure you maintain a consistent state. Only once you have a consistent state then is it worth trying to improve the rate of ConflictErrors. (Which in your case of sessions lasting for many hours I think the numbers you quote elsewhere are too small. And, yeah, an alternative implementation for _p_resolveConflict might help there. Personally I prefer the simple approach of just commenting that out completely and living with a slightly higher conflict count.) Might be worth trying without ZEO in the mix. Definitely worth the effort, if you have not already, to recreate the whole system on a separate host that you can feel comfortable making changes to. Then you can happily tune the various knobs downwards which may help with trying to observe the problem. For example session-timeout-minutes of 1. cheers michael _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev