!! Please do not post Off Topic to this List !!
Chris & list,
The last time I checked, an ANALYZE also invalidates
the SQL in the shared pool, to force a parse and
rebuild of the execution plan, on the next execution
of the SQL statement.
Regards,
Gaja
- Christopher Spence <cspence_at_FuelSpot.com> wrote:
> !! Please do not post Off Topic to this List !!
>
> If the statement is not exactly the same, the new
> statement will be
> reparsed.
>
> If you are executing it under a different user the
> statement will be
> reparsed.
>
> If you drop/create an index, it will invalidate the
> explain plan if that was
> part of the chosen path.
>
> I believe statistics also invalidates the plans as
> well, but not 100% sure
> on that.
>
> "Do not criticize someone until you walked a mile in
> their shoes, that way
> when you criticize them, you are a mile a way and
> have their shoes."
>
> Christopher R. Spence
> Oracle DBA
> Phone: (978) 322-5744
> Fax: (707) 885-2275
>
> Fuelspot
> 73 Princeton Street
> North, Chelmsford 01863
>
>
>
> -----Original Message-----
> Sent: Thursday, September 13, 2001 8:11 PM
> To: Multiple recipients of list ORACLE-L
>
> !! Please do not post Off Topic to this List !!
>
> No takers so far - anybody?
>
> Alex Hillman
>
> -----Original Message-----
> Sent: Thursday, September 06, 2001 4:30 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Let's assume that SQL statement was parsed by user
> X. If this or another
> user reexecute this same statement what are the
> conditions that this SQL
> statement will be reparsed? Let's assume that
> privileges are not changed and
> tables and/or views are not dropped and views are
> not changed. And optimizer
> parameters are not changed. First come to mind is
> dropping index. What about
> reanalizing one of the object - theoretically should
> also reparse. Anything
> else?
>
> Also is there possibility to force reparsing of SQL
> statement if let say
> index was added - short of flashing shared pool?
>
> Alex Hillman
> --
> Please see the official ORACLE-L FAQ:
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> --
> Author: Hillman, Alex
> INET: Alex.Hillman_at_usmint.treas.gov
>
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> Please see the official ORACLE-L FAQ:
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> --
> Author: Hillman, Alex
> INET: Alex.Hillman_at_usmint.treas.gov
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> Fat City Network Services -- (858) 538-5051 FAX:
> (858) 538-5051
> San Diego, California -- Public Internet
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> To REMOVE yourself from this mailing list, send an
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> --
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>
> Fat City Network Services -- (858) 538-5051 FAX:
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Gaja Krishna Vaidyanatha
Director, Storage Management Products,
Quest Software, Inc.
Co-author - Oracle Performance Tuning 101
http://www.osborne.com/database_erp/0072131454/0072131454.shtml
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--
Author: Gaja Krishna Vaidyanatha
INET: oraperfman_at_yahoo.com
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Received on Fri Sep 14 2001 - 09:37:18 CDT
