My experience in contacting Oracle regarding modifying of notes on MetaLink
has not been very satisfying. I did take the opportunity to voice my dissatisfaction
by using the poll at the top of the article to indicate that I would not recommend this
article to others.
Jared
| Richard Foote <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED] 10/17/2003 04:29 AM
|
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> cc: Subject: Re: re Rebuilding Indexes in Oracle Apps -- was RE: RE: Separate |
Hi Hemant,
One word perfectly describes the Metalink article you highlighted:
Crap ;)
A nice example of how Oracle Corp is the greatest myth generator of them
all !! It's all rather sad and embarressing isn't.
Thanks for the headsup. Anyone in a position to get the note removed ?
Cheers
Richard
>Quoting Metalink Note 182699.1 bde_rebuild.sql Validates and Rebuilds
Fragmentated Indexes (8.0->9.0)
>
>Index fragmentation occurs when a key value changes, and the index row is
>deleted from one place (Leaf Block) and inserted into another.
>
> Deleted Leaf Rows are not reused. Therefore indexes whose columns are
>subject to value change must be rebuilt periodically since they become
naturally fragmentated.
>
>An index is considered to be 'fragmentated' when more than 20% of its Leaf
Rows space is
>empty because of the implicit deletes caused by indexed columns value
changes.
>
>Fragmentated indexes degrade the performance of index range scan
operations.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Richard Foote
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
