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Thread: Finding active connections to postmaster

Finding active connections to postmaster

From
drt@un.bewaff.net (Doobee R. Tzeck)
Date:
I want to list which users are conected to postmaster and what
they are doing. I guess I have overseen something but I wasn't
able to find any information on doing this in the handbook, FAQ
or mailinglist archives.

Is it possible to list active connectons? How?

drt

--
"Before the Internet, a certain breed of deconstructionists had a lot of fun
telling everybody that "privileging of dominant paradigms" was wrecking the
world. The Internet has taught us that privileging certain views is
absolutely crucial to avoid drowning in the ravings of idiots." -Keunwoo Lee

Re: Finding active connections to postmaster

From
Bramsi Prenata
Date:
On 27 Sep 2001 10:22:02 +0200
drt@un.bewaff.net (Doobee R. Tzeck) wrote:

>
> I want to list which users are conected to postmaster and what
> they are doing. I guess I have overseen something but I wasn't
> able to find any information on doing this in the handbook, FAQ
> or mailinglist archives.
>
> Is it possible to list active connectons? How?

to list active connection, you can try this command in shell prompt

[bramsi@al-quds bramsi]$ ps ax | grep postgres | grep -v grep | grep -v psql | awk -F " " {'print $7'}
postgres

but i'm sorry, i do not know what they are doing rigth now.

Hope can help you.

Best regards,
Bramsi Prenata

Re: Finding active connections to postmaster

From
"Martins Zarins"
Date:
On 27 Sep 2001, at 10:22, Doobee R. Tzeck wrote:

>
> I want to list which users are conected to postmaster and what
> they are doing. I guess I have overseen something but I wasn't
> able to find any information on doing this in the handbook, FAQ
> or mailinglist archives.
>
> Is it possible to list active connectons? How?
>
> drt
ps aux |grep postgres

Mark

Re: Finding active connections to postmaster

From
Tom Lane
Date:
drt@un.bewaff.net (Doobee R. Tzeck) writes:
> Is it possible to list active connectons? How?

7.2 will have a better solution to this (SELECT * FROM pg_stat_activity).

            regards, tom lane

Re: Finding active connections to postmaster

From
reina@nsi.edu (Tony Reina)
Date:
> Is it possible to list active connectons? How?
>

This will give a unique list of the names of those logged on:

echo Current users logged onto database:
ps ax | grep postgres: | awk '{print $6 | "sort" } ' | uniq


This will list the user and what process is being done:

ps ax | grep postgres: | awk '{print $6 ":"  $9 " on " $7}'


HTH,
-Tony

How to make 'tail -f' in PostgreSQL?

From
"Michael B. Babakov"
Date:
 Do you know how in PostgreSQL to do the receipt of datas in process of
their
entering as a programm 'tail-f' or need to check in cycle new records
entering
every seconds?

--
Good luck,
   Michael Babakov

---
e-mail: M.Babakov@sochi.net.ru
http://sochi.net.ru/~mike

Re: How to make 'tail -f' in PostgreSQL?

From
"Jeff Boes"
Date:
In article <3BBA0C49.226148@sochi.net.ru>, "Michael B. Babakov"
<M.Babakov@sochi.net.ru> wrote:

> Do you know how in PostgreSQL to do the receipt of datas in process of
> their
> entering as a programm 'tail-f' or need to check in cycle new records
> entering
> every seconds?
>

Well, this would require a sort of "continuous transaction" against a
table, which is a paradox--you only get to see the database at a given
point in time BETWEEN other transactions.

You probably want to look into the NOTIFY command.  The applications
writing data could issue a NOTIFY to indicate when they have written a
row, and the applications reading data could re-run their query when they
receive a NOTIFY event.

--
Jeff Boes                                             vox 616.226.9550
Database Engineer                                     fax 616.349.9076
Nexcerpt, Inc.                                      jboes@nexcerpt.com