"Kevin Grittner" <Kevin.Grittner@xxxxxxxxxxxx> writes: > ERROR: could not read block 1482762 of relation 1663/16385/16483: > Invalid argument > So the block number is increasing each time. I'm inclined to think > that this is the result of the scan passing over rows added by itself. It's just about impossible to believe that you would get an error at the block I/O level due to a higher-level issue like "scan passing over rows added by itself". What I *could* believe, on the other hand, is that there's some problem with reading blocks recently added to the file. As I said before, we really really need to find out what the Windows-level error code is --- "Invalid argument" isn't telling us anything useful here. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq