Dave Cramer <pg@xxxxxxxxxxxxx> writes: > I've also got a customer getting this error message. > the OS is OSX 10.3 they are using plpgsql, and shared buffers is set > very low > shared_buffers = 16 Well, the answer to that is "if it hurts, don't do that". You couldn't expect to process more than a very small number of very simple queries with so few buffers. (Example: a simple INSERT involving a btree index will require at least four concurrently pinned buffers if there's a need for a btree page split; a join query would require at least one buffer per table and index involved, etc.) Hubert was using a reasonably large number of buffers, so his case sounds more like an actual bug, but I'd call the above just pilot error. regards, tom lane