RE: ** optimizer_dynamic_sampling
From: Allen, Brandon <Brandon.Allen_at_OneNeck.com>
Date: Fri, 26 Jun 2009 14:28:20 -0700
Message-ID: <64BAF54438380142A0BF94A23224A31E1128C54EB4_at_ONEWS06.oneneck.corp>
The sampling levels are described here:
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Date: Fri, 26 Jun 2009 14:28:20 -0700
Message-ID: <64BAF54438380142A0BF94A23224A31E1128C54EB4_at_ONEWS06.oneneck.corp>
The sampling levels are described here:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/stats.htm#sthref1118
I haven't had any problems with auto_sample_size in 10g, but I've heard rumors that it's much better/faster in 11g. Another big change to keep in mind is that in 10g histograms will be gathered by default.
Regards,
Brandon
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-- http://www.freelists.org/webpage/oracle-lReceived on Fri Jun 26 2009 - 16:28:20 CDT