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Re: Dbms_stats Analyze Data Dictionay ?

From: Brian Peasland <oracle_dba_at_remove_spam.peasland.com>
Date: Wed, 28 May 2003 18:25:18 GMT
Message-ID: <3ED4FF0E.A82D6260@remove_spam.peasland.com>


> However, there is no statistics on X$ tables. Neither
> dbms_stats.gather_table_stats, nor sampling works with X$ tables in 9.2.
> Therefore, any query against dictionary view having X$ tables in view
> definition might have a goofy plan generated.

But X$ "tables" aren't part of the Data Dictionary. Rather, they are gateways into memory locations, etc. There are no indexes on X$ tables, etc. So what relevance does this really have when talking about stats against the Data Dictionary?

Cheers,
Brian

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Received on Wed May 28 2003 - 13:25:18 CDT

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