On Wed, Jun 13, 2012 at 02:32:21PM -0400, Bruce Momjian wrote: > I assume 8.3 vacuumdb did not generate these errors. If it was 8.4 I > would suggest it was because we don't copy visibility map files from > pre-9.1 because those were not crash-safe, but 8.3 didn't have > visibility map files (added in PG 8.4), so 8.3 should have been checking > the exact same transaction ids as 9.1. > > Basically, I can't think of a cause. yeah, neither can we. but - any other test - even using the same source of $PGDATA went flawless. I'm tempted to assume it's just a random glitch in matrix, and just go on. Best regards, depesz -- The best thing about modern society is how easy it is to avoid contact with it. http://depesz.com/ -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general