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From: Ron Johnson <[email protected]>
To: pgsql-general <[email protected]>
Subject: Re: Option on `postgres` CLI to shutdown when there are no more active connections?
Date: Sat, 11 Oct 2025 22:56:31 -0400
Message-ID: <CANzqJaBOWpoBDSNsxO=+zna1DEAqUNct5wm=4vQsOXiPwY7x=Q@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CAPR5_5psNqCm1OQr5LL4v6z02Sh=2YHYUg8NY+3xMzfGHfKs+w@mail.gmail.com>
	<[email protected]>

On Sat, Oct 11, 2025 at 7:11 PM Adrian Klaver <[email protected]>
wrote:

> On 10/8/25 12:39, David Barsky wrote:
> > Hiya folks,
> >
> > I'm a bit of a newcomer when it comes to PostgreSQL, so I apologize if
> > this is
> > the wrong mailing list. Anyways, my two questions:
> >
> > 1. Is there any interest in adding a command line option to the
> > `postgres` CLI
> >     that shuts down the PostgreSQL instance once (and optionally cleans
> > up the
> >     data directory) once all connections have disconnected?
>
> https://www.postgresql.org/docs/current/app-pg-ctl.html
>
> "
> stop mode shuts down the server that is running in the specified data
> directory. Three different shutdown methods can be selected with the -m
> option. “Smart” mode disallows new connections, then waits for all
> existing clients to disconnect. If the server is in hot standby,
> recovery and streaming replication will be terminated once all clients
> have disconnected. “Fast” mode (the default) does not wait for clients
> to disconnect. All active transactions are rolled back and clients are
> forcibly disconnected, then the server is shut down. “Immediate” mode
> will abort all server processes immediately, without a clean shutdown.
> This choice will lead to a crash-recovery cycle during the next server
> start.
> "
>

I think OP is looking for AUTO_CLOSE, like SQL Server (and Rdb/VMS before
it).  Its only real utility is OP's use-case: a Windows desktop running
local testing.

We in the shell scripting daemon world don't think like that.

-- 
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!

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