ok, I understand that.
Thank you. I'll try it.
joao
On Wed, 2006-05-03 at 19:12, Tom Lane wrote:
> Joao Miguel Ferreira <jmf@estg.ipvc.pt> writes:
> > On Wed, 2006-05-03 at 15:45, Bruno Wolff III wrote:
> >> How often are you vacuuming the table?
>
> > I wrote that on my original e-mail: I do a "VACUUM ANALYZE" every 30
> > minutes and a "VACUUM FULL" every 2 hours.
>
> That's not a good maintenance procedure. Just do the plain vacuums and
> forget the VACUUM FULL. If the table row count is fairly stable then
> plain vacuums are all you need. I suspect VACUUM FULL is making things
> worse not better --- it'll compact the tables, but at the price of
> bloating the indexes.
>
> You might want to pay some attention to exactly where the space is
> disappearing to --- which files are getting bigger?
>
> If you find you are suffering from index bloat, a very occasional
> REINDEX (maybe once a week or less) will fix that, but VACUUM FULL
> won't help it at all. I wouldn't recommend doing this unless
> proven necessary, however.
>
> regards, tom lane
thx
joao