RE: silly dbms_stats question
Date: Thu, 30 Apr 2009 14:49:01 -0400
Message-ID: <46732D8B0755664E87B4276E3C2FF6056ECC135769_at_EXM-OMF-06.Ceg.Corp.Net>
>Other than exporting the good stats and re-importing them daily, is there any way to stop Oracle from marking the stats as stale?
Do you have a particular issue with this approach? Why doesn't this work for you?
From: Thomas Day [mailto:tomdaytwo_at_gmail.com] Sent: Thursday, April 30, 2009 7:57 AM
To: yong321_at_yahoo.com
Cc: Crisler, Jon; oracle-l_at_freelists.org Subject: Re: silly dbms_stats question
Does Oracle use stale stats for the CBO if fresh stats aren't available or does Oracle treat stale stats the same as non-existant stats? Is there a way, other than re-analyzing the table or index, to keep stats from being marked as stale?
We have tables that are being truncated nightly and then being re-loaded with data that is 99.99% identical with the previsous data. (Don't bother telling me that we shouldn't be doing it that way; I have to play with the cards I'm dealt.) I have the schema stats locked and the automatic stats job is disabled. (It insisted on computing new stats on the table when it was at 0 rows.) Oracle is marking the stats as STALE.
Other than exporting the good stats and re-importing them daily, is there any way to stop Oracle from marking the stats as stale?
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-- http://www.freelists.org/webpage/oracle-lReceived on Thu Apr 30 2009 - 13:49:01 CDT