Bruce Momjian <bruce@momjian.us> ezt írta (időpont: 2020. aug. 27., Cs, 0:57):
On Wed, Aug 26, 2020 at 09:49:00AM +0200, Magnus Hagander wrote: > > > On Wed, Aug 26, 2020 at 7:38 AM Nick Cleaton <nick@cleaton.net> wrote: > > On Tue, 25 Aug 2020 at 23:55, PG Bug reporting form <noreply@postgresql.org > > wrote: > > We upgrade from 9.6 Centos7 to 12.3 Centos 8 > > > This from https://www.postgresql.org/docs/12/amcheck.html#id-1.11.7.11.9 > might be relevent: > > > Comparisons of datums of a collatable type like text must be immutable > (just as all comparisons used for B-Tree index scans must be immutable), > which implies that operating system collation rules must never change. > Though rare, updates to operating system collation rules can cause these > issues. More commonly, an inconsistency in the collation order between a > master server and a standby server is implicated, possibly because the > major operating system version in use is inconsistent > > > And in particular also see https://wiki.postgresql.org/wiki/Locale_data_changes > , which shows that the step from Centos7 to Centos8 is one that causes this > problem. You need to reindex all text/varchar indexes when you make that > upgrade.
And we should have a script ready for people to do this. :-)