From: Tomas Vondra <tv@fuzzy.cz>
To: pgsql-performance@postgresql.org
Subject: Re: since when has pg_stat_user_indexes.idx_scan been counting?
Date: Thu, 12 May 2011 20:19:41 +0200
Message-ID: <4DCC24BD.9040900@fuzzy.cz> (raw)
In-Reply-To: <BANLkTikhNLPhCjE819=RFG-+CB6UV4GbUA@mail.gmail.com>
References: <BANLkTikhNLPhCjE819=RFG-+CB6UV4GbUA@mail.gmail.com>
Dne 12.5.2011 17:39, Willy-Bas Loos napsal(a):
> Hi,
>
> We have some indexes that don't seem to be used at all.
> I'd like to know since when they have not been used.
> That is, the time when postgres started counting to reach the number
> that is in pg_stat_user_indexes.idx_scan
>
> Is there a way to retrieve that from the database ?
BTW it's really really tricky to remove indexes once they're created.
What if the index is created for a single batch process that runs once a
year to close the fiscal year etc?
So be very careful about this.
Tomas
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To: pgsql-performance@postgresql.org
Cc: tv@fuzzy.cz
Subject: Re: since when has pg_stat_user_indexes.idx_scan been counting?
In-Reply-To: <4DCC24BD.9040900@fuzzy.cz>
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