Read somewhere about sqlite3 becoming a bottleneck point. This bottle necking, combined with the XML issues under discussion, I might suggest some investigation be given to DB2 EXPRESS-C (free community edition). DB2 is oft overlooked, but it is mature and capital-F FULL featured. It also supports trueXML, which allows native XML storage and retrieval via SQL language -- a nice fs get a long thing. it might be a great fit for high-end fs implementations. Left to default settings, it can be grabby of the machines resources -- cores and ram. Default likely too selfish for fs+db2 same-machine coexistence, but this is highly and easily tunable. In the small foot print (embedded) SQL engine space -- we love "mimer" Cheers, /S ————— iThing: Big thumbs & little keys. Please excuse typo, spelling and grammar errors • Good planets are hard to find – think before you print • My desire to be well-informed is currently at odds with my desire to remain sane. • Last night I played a blank CD at full blast. The Mime next door went nuts.