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@xxxxxxxxxxxxxxxx] Sent: Thursday, 7 December 2017 2:56 PM To: Dylan Luong <Dylan.Luong@xxxxxxxxxxxx> Cc: pgsql-general@xxxxxxxxxxxxxxxxxxxx Subject: Re: clean out ./data/base/pgsql_tmp On Thu, Dec 7, 2017 at 5:18 PM, Dylan Luong <Dylan.Luong@xxxxxxxxxxxx> 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 away pgsql_tmp data on the theory that it might be useful for forensics. -- Thomas Munro http://www.enterprisedb.com
