Re: BUG #18966: Invalid SQL queries hang indefinitely until server restart

On Tue, 2025-06-24 at 15:09 -0400, Tom Lane wrote:
> PG Bug reporting form <noreply@postgresql.org> writes:
> > I’m running PostgreSQL 16.9 in Docker (PostgreSQL 16.9 (Debian
> > 16.9-1.pgdg120+1) on x86_64-pc-linux-gnu, compiled by gcc 12.2.0, 64-bit),
> > and intermittently observe that invalid SQL queries hang indefinitely
> > instead of immediately returning an error.
> > Valid queries continue to work normally and return results right away.
> 
> You've not provided nearly enough info to do more than
> speculate, however.

Yes.  One speculation that occurs to me is that the control group settings
of your container are such that a process that exceeds the memory quota is
suspended until enough memory becomes free.

Yours,
Laurenz Albe