im concerned about hitting the v$views in production. we have 30,000 users. its either that or do counts. Its a requirement from the users.
not sure what to do. doesnt tom kyte do this on asktom?
>
> From: Wolfgang Breitling <breitliw_at_centrexcc.com>
> Date: 2003/12/30 Tue PM 12:09:33 EST
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Subject: Re: help with estimate row count from asktom
>
> v$sql_plan_statistics (and consequently v$sql_plan_statistics_all) only
> have data to show if statistics_level is set to ALL. You can set that at
> the session level.
> Has anyone done measurements on a busy system to evaluate what the impact
> is of setting that system-wide. The impression I have is that it is not
> something I want to set in production all the time.
>
> At 08:39 AM 12/30/2003, you wrote:
> >I have a very strict SLA and I posted a question on asktom about the best
> >way to get the 'estimate' of rows and return it to the user. Im getting
> >'no data found'. anyone have ideas? Im on 9.2, tables are analyzed, and Im
> >in a DBA account.
> >
> >my question is at the bottom.
> >
> >http://asktom.oracle.com/pls/ask/f?p=4950:8:352052922015846036::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:1933814740032,
> >
> >--
> >Please see the official ORACLE-L FAQ: http://www.orafaq.net
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> >Author: <ryan_oracle_at_cox.net
> > INET: ryan_oracle_at_cox.net
> >
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> Wolfgang Breitling
> Oracle7, 8, 8i, 9i OCP DBA
> Centrex Consulting Corporation
> http://www.centrexcc.com
>
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> Author: Wolfgang Breitling
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Received on Tue Dec 30 2003 - 12:19:26 CST
