Since the temp files are easily identifiable as it has the PID in the fileaname.
Is it ok just manually deleting these files as the process has already being killed.
-----Original Message-----
From: Thomas Munro [mailto:thomas.munro@enterprisedb.com]
Sent: Thursday, 7 December 2017 2:56 PM
To: Dylan Luong <Dylan.Luong@unisa.edu.au>
Cc: pgsql-general@lists.postgresql.org
Subject: Re: clean out ./data/base/pgsql_tmp
On Thu, Dec 7, 2017 at 5:18 PM, Dylan Luong <Dylan.Luong@unisa.edu.au> wrote:
> We have an issue where one of the developers ran a large query that
> hung was filling up the DATA drive very rapidly. From 50% usage to 95%
> in less than 2hrs.
>
> It created a very large pgsql_tmp size (300GB). To stop the drive
> filling up we had to kill the process manually using kill -9.
>
> How do we clean up the pgsql_tmp folder? Will Postgres periodically
> clean it? Ie CHECKPOINT?
Hi Dylan,
A clean shutdown/restart will clean it out. A crash restart (as happens if you kill processes like that) doesn't clear
awaypgsql_tmp data on the theory that it might be useful for forensics.
--
Thomas Munro
http://www.enterprisedb.com