Re: ERROR: heap_mark4update: (am)invalid tid, after the 14th update in 7.3.2

Christoph_Becker@t-online.de (Christoph_Becker) writes:
> But the following simplification will produce the error:

> UPDATE p_behbl SET fallnr = p_kvk.lfdnr FROM p_kvk WHERE
> p_behbl.fallnr is null and p_behbl.patnr = p_kvk.patnr;

If there are multiple p_kvk rows matching some p_behbl row, then this
is a known problem.  See the archives from a week or two back.

            regards, tom lane