Re: How to clear log files

On Wed, Feb 3, 2010 at 4:12 PM, Campbell, Lance <lance(at)illinois(dot)edu> wrote:

> PostgreSql:8.4.1
>
> Is there a way for me to tell postgres to clear the log file. Example: I
> have log files created with names corresponding to the days of the week.
> This way they overwrite each other every week. When I deploy software
> enhancements I would like to clear the log file for the day without having
> to stop postgres. This way anything I see I know was after the deployment
> of my enhancements. I tried to just delete the file with postgres running.
> I found that it did not recreate the log file so I was forced to restart
> postgres.
>
>
>
> Is there a command that might clear a log file or force it to rotate?
>

You should be able to set 'log_truncate_on_rotation=on' in postgresql.conf
and then run:

select pg_rotate_logfile();

That should rotate it, and if you have your log_filename setup with day of
week only, it should truncate and restart in the same logfile. Haven't
tested it, so I may be wrong, but it's worth a shot.

--Scott