This select doesn't return any row. What does it mean ?
Ezequias.
2007/2/27, Jim C. Nasby <jim@xxxxxxxxx>:
On Tue, Feb 27, 2007 at 11:26:02AM -0800, Dhaval Shah wrote:
> I am planning to use 8.2 and the average inserts/deletes and updates
> across all tables is moderate. That is, it is a moderate sized
> database with moderate usage of tables.
>
> Given that, how often do I need to reindex the tables? Do I need to do
> it everyday?
No, you should very rarely if ever need to do it.
If you're really concerned, I suggest monitoring average tuples per
index page; something like
SELECT relname, reltuples/relpages FROM pg_class WHERE relkind = 'i' AND
relpages > 1000;
That'll show tuples/page for all indexes over 8MB in size.
> Also with 8.2, I do not have to do vacuum anymore or that is what I
> understand. Does it do auto-vacuum?
You still need to enable autovacuum. See autovacuum_enable.
--
Jim Nasby jim@xxxxxxxxx
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
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Atenciosamente (Sincerely)
Ezequias Rodrigues da Rocha
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A pior das democracias ainda é melhor do que a melhor das ditaduras
The worst of democracies is still better than the better of dictatorships
http://ezequiasrocha.blogspot.com/
