On Tue, Jul 29, 2025 at 12:45 PM PG Bug reporting form
<noreply(at)postgresql(dot)org> wrote:
> / > pg_isready -U fff
> /tmp:5432 - accepting connections
> / > pg_isready -U fff -d555
> /tmp:5432 - accepting connections
> ```
>
> (`fff` is not a user and `555` is not a db on my installation)
Hi Samuel, this behavior is explained in the docs [1]:
> It is not necessary to supply correct user name, password, or database name values to obtain the server status; however, if incorrect values are provided, the server will log a failed connection attempt.
So it's essentially just a courtesy to whoever's watching your logs.
--Jacob
[1] https://www.postgresql.org/docs/current/app-pg-isready.html#APP-PG-ISREADY-NOTES