is it possible to delete the psql log while psql is running?

cat /dev/null > name_of_log_to_truncate

-----Original Message-----
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of gabor
Sent: Thursday, December 08, 2005 6:21 AM
To: pgsql-general@postgresql.org
Subject: [GENERAL] is it possible to delete the psql log while psql is running?

hi,

i'd like to delete the postgresql log file
(resides in /var/log/pgsql/postgres),
because it has become too big.

can i simply delete the file while postgresql is running?

or do i have to stop postgresql first, and only delete the logfile after
that?

thanks,
gabor

--
That's life for you, said McDunn. Someone always waiting for someone
who never comes home. Always someone loving something more than that
thing loves them. And after awhile you want to destroy whatever
that thing is, so it can't hurt you no more.
-- R. Bradbury, "The Fog Horn"

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gabor schrieb:

hi,

i'd like to delete the postgresql log file
(resides in /var/log/pgsql/postgres),
because it has become too big.

can i simply delete the file while postgresql is running?

or do i have to stop postgresql first, and only delete the logfile after
that?

echo -n >postgresql.log

delete will have no effect unless the last
process takes hands off the file.

HTH
Tino

I'd do
echo > pgql.log

Oleg
On Thu, 8 Dec 2005, gabor wrote:

hi,

i'd like to delete the postgresql log file
(resides in /var/log/pgsql/postgres),
because it has become too big.

can i simply delete the file while postgresql is running?

or do i have to stop postgresql first, and only delete the logfile after
that?

thanks,
gabor

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83

On Thursday December 8 2005 9:19 am, Oleg Bartunov wrote:

I'd do
echo > pgql.log

That won't free any space from an open file. You have to stop
postgresql first in order to close the file, or use log file
rotation and wait until it rotates out to a closed state.

Ed

hi,

use "cp /dev/null pqsql.log" to truncate the logfile "in place" and
free some space.

re, thies

Am 08.12.2005 um 23:26 schrieb Ed L.: