Can we force fully disconnect all client connected to localhost:5432

On 30/12/2009 2:02 PM, Gaurav K Srivastav wrote:

Hi,
Do we have any command to forcefully disconnet each client in postgres .
If we have please let me know.

In 8.4 there's pg_terminate_backend(). Prior versions don't have any
truly safe method, though sending a SIGTERM to a backend is supposed to
be somewhat safe.

--
Craig Ringer

Sorry Craig,

I am using
PostgreSQL 8.3.8 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC) 3.4.6
20060404 (Red Hat 3.4.6-10)
version. and in my case I have to drop database and recreate it without
stop/restart database server.while several client are also running on this
datbase server .As you told pg_terminate_backend() is for 8.4.
Can you please let me know the how I can do this task via shell script.

Guarav Kumar Srivastava

---------- Forwarded message ----------
From: Gaurav K Srivastav <gauravgkp@gmail.com>
Date: Wed, Dec 30, 2009 at 5:57 PM
Subject: Re: [BUGS] Can we force fully disconnect all client connected to
localhost:5432
To: Craig Ringer <craig@postnewspapers.com.au>

Hi Craig Ringer,
I am using
PostgreSQL 8.3.8 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC) 3.4.6
20060404 (Red Hat 3.4.6-10)
version. and in my case I have to drop datbase and recreate it without
stop/restart database.while several client are also running on this datbase
server .As you told pg_terminate_backend() is for 8.4.
Can you please let me know the how I can do this task via shell script.

Guarav Kumar Srivastava

On Wed, Dec 30, 2009 at 5:29 PM, Craig Ringer <craig@postnewspapers.com.au

On Wed, Dec 30, 2009 at 7:36 AM, Gaurav K Srivastav <gauravgkp@gmail.com> wrote:

Sorry Craig,

I am using
PostgreSQL 8.3.8 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC) 3.4.6
20060404 (Red Hat 3.4.6-10)
version. and in my case I have to drop database and recreate it without
stop/restart database server.while several client are also running on this
datbase server .As you told pg_terminate_backend() is for 8.4.
Can you please let me know the how I can do this task via shell script.

I think you're missing Craig's point. On versions prior to 8.4, there
isn't a safe way to do this - you may crash your entire database
server. So while it's probably possible to write a shell script, you
may not like the results very much.

Also, this is starting to sound a bit more like a usage question,
which you might want to try on pgsql-general. This list is for bug
reports.

...Robert