Re: regression database - Mailing list pgsql-admin

From Tom Lane
Subject Re: regression database
Date
Msg-id 5707.1093577361@sss.pgh.pa.us
Whole thread Raw
In response to Re: regression database  (kris pal <kristhegambler@yahoo.com>)
Responses Re: vacuum pg_attribute causes high load  (kris pal <kristhegambler@yahoo.com>)
List pgsql-admin
kris pal <kristhegambler@yahoo.com> writes:
> Actually I just noticed something. Previously for some reason, I
> thought the data directory corresponded to 'regression'. But I double
> checked it now with oid2name and it corresponds to our main database
> say "dds".

Ah, that makes more sense.

> But the issue still remains. In the sense that pg_attribute etc are
> still so huge and I have no idea why.

Probably because you've created and deleted a lot of tables (does your
app use temp tables a lot?).  If you aren't good about vacuuming the
system catalogs then you're going to get table bloat.  If you're using
something pre-7.4 then you may get index bloat even if you *are*
vacuuming regularly :-(.

My suggestions are to update to 7.4, if you're not there already
(if you are, you may need to do VACUUM FULL and REINDEX to get rid
of the bloat); then adopt a stricter regime of routine vacuuming.
And check your FSM settings.

            regards, tom lane

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