On 2018-May-24, Andres Freund wrote: > FWIW, even if that weren't the case: a) there'd be a lot more wrong with > this routine imo. b) some of the tuples affected clearly weren't > frozen... Right. BTW is it just a coincidence or are all the affected tables pg_authid? Maybe the problem is shared relations ..? Maybe the fact that they have separate relfrozenxid (!?) in different databases? -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services