Re: When does VACUUM FULL not clean out all deleted data?

Поиск
Список
Период
Сортировка
От Joshua D. Drake
Тема Re: When does VACUUM FULL not clean out all deleted data?
Дата
Msg-id 20080107091211.7745b51a@commandprompt.com
обсуждение исходный текст
Ответ на Re: When does VACUUM FULL not clean out all deleted data?  (Geoffrey <lists@serioustechnology.com>)
Ответы Re: When does VACUUM FULL not clean out all deleted data?  (Geoffrey <lists@serioustechnology.com>)
Список pgsql-admin
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Mon, 07 Jan 2008 10:53:11 -0500
Geoffrey <lists@serioustechnology.com> wrote:

> So, I'm wondering if anyone can point me to more specific information
> as to when, if ever, you should 'vacuum full?'

1. If you over run your fsm pages
  * Except that vacuum full won't reclaim the index usage so use
CLUSTER instead.
2. If you are only repairing bloat on a smaller table.
  * It may be faster to backup and restore the table. Since vacuum full
is an exclusive lock anyway it doesn't matter.

Sincerely,

Joshua D. Drake


- -- 
The PostgreSQL Company: Since 1997, http://www.commandprompt.com/ 
Sales/Support: +1.503.667.4564   24x7/Emergency: +1.800.492.2240
Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
SELECT 'Training', 'Consulting' FROM vendor WHERE name = 'CMD'


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFHgl1rATb/zqfZUUQRAod6AKCUkRKy+gqOkb4xpgVXiP8BCIePKQCgo2yS
ZRmnIVwrYHFoJ8juI08KL6c=
=Jb1i
-----END PGP SIGNATURE-----

В списке pgsql-admin по дате отправления:

Предыдущее
От: "Scott Marlowe"
Дата:
Сообщение: Re: Need some info on Postgresql
Следующее
От: Geoffrey
Дата:
Сообщение: Re: When does VACUUM FULL not clean out all deleted data?