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Pavlos Christoforou wrote OTO an RDBMS maybe a more reliable datastore than the filesystem with better consistency, recovery tools etc etc.

The other bigwin for an RDBMS-based one is, of course, that you can share it between zopes. And for me, it's easier to manage a DBMS table than a chunk of filesystem somewhere on a machine.

Also check whether SQLSession caches info. It used to hit the RDBMs for every variable access which was very prohibitive for us, but Anthony mentioned that he was changing that.

As of 0.2.x it sometimes does, depending on whether you've turned on caching - but 0.3.0 will fix it entirely, I plan to remove the non-cached option, and do it a whole lot smarter. 0.2.9 will be out shortly (tonight, if I can stop this sodding PC from crashing every 10 minutes) and will be the last of the current architecture. 0.3.0 is moving to a more sane system - one that will stop my DBA from hurting me. :) Anthony, who's really not a fan of PC hardware. -- Anthony Baxter <anthony@interlink.com.au> It's never too late to have a happy childhood.