Re: Vacuum taking an age

If you're using the version 8.1 and after, you should consider using the
auto-vacuum daemon that is the best way to do it:
http://www.postgresql.org/docs/8.1/static/maintenance.html

Pascal;
Brian Modra a écrit :
> Hi,
>
>
> I have a pretty "live" table: rows being inserted and updated more
> than once 1 per second, though far, far more inserts than updates.
>
> There are currently over 3 million rows.
>
> It has not been vacuumed for months.
>
> Now a vacuum on that table takes hours, and I have not let it complete
> because it stays running into our daily busy time... but I've been
> told its necessary because the table is slowing down.
>
> I have begun a cron job which will do a daily analyze, and am thinking
> of a weekly vacuum...
> Please advise on the best way to keep this table maintained, even if
> it means regularly taking the service offline early on Sunday
> morning...
>
> thanks in advance
> Brian
>
>