Pavel Stehule <pavel.stehule@gmail.com> writes:
> st 19. 12. 2018 v 17:59 odesílatel Tom Lane <tgl@sss.pgh.pa.us> napsal:
>> So either this is something we fixed since 9.5.5, or your summary
>> of the problem is missing many critical details.
> I got different error message "could not open critical system index". I
> checked files, and related files was there.
Hmm ... looking at the relcache code, it appears that could only happen
if the pg_class entry for that index couldn't be found. Which probably
means you've suffered catastrophic damage to pg_class --- there's no
good reason to assume that only that one row has been clobbered.
Reindexing isn't going to get you out of that :-(
regards, tom lane
