> Any suggestions? I think your patch is a superb start, please put it in the collector :-) Does it batch on each of the two days? The reason I ask is that what happens if you have 200 transactions on one day? > Is there a way to lock only for writes? So that pages can > still be served? Dunno, I hope so. The best place to ask would be zodb-dev@zope.org... cheers, Chris