Re: sample size

From: Oradba Linux <techiey2k3_at_comcast.net>
Date: Sun, 19 Dec 2004 23:33:37 GMT
Message-ID: <ldoxd.289083$R05.149998@attbi_s53>

<wagen123_at_yahoo.com> wrote in message
news:1103425113.938766.264500_at_f14g2000cwb.googlegroups.com...
>
> Oradba Linux wrote:
> > what does sample size in dba_indexes mean? The sample size in
> dba_tables is
> > the number of records sampled.
> > what about indexes ?
>
> Size of the sample used to analyze the index. If you think your index
> is skewed, you may want to use a higher sample size.
>

Is it the number of rows?
"Size of the sample used to analyze the index" -- what does that mean? Received on Sun Dec 19 2004 - 17:33:37 CST