On 2023-Feb-08, PG Bug reporting form wrote:
> The following bug has been logged on the website:
>
> Bug reference: 17783
> Logged by: Roderick Zuñiga
> Email address: roderick.zuniga@gmail.com
> PostgreSQL version: Unsupported/Unknown
> Operating system: linux
> Description:
>
> select * from public.pulsos_mensuales;
> ERROR: could not open file "base/361098/2674030_vm": Operation not permitted
Hmm, sounds like something changed the permissions for that file. Put
them back so that they are like the permissions on all other files in
that directory.
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Álvaro Herrera 48°01'N 7°57'E — https://www.EnterpriseDB.com/