Re: OT: Misinformation Ranting

No.

ltiu <ltiu_at_alumni.sfu.ca>
Sent by: root_at_fatcity.com
 09/10/2002 02:09 PM
 Please respond to ORACLE-L  

        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
        cc: 
        Subject:        Re: OT:  Misinformation Ranting

So, did you bend to her wishes?

ltiu

Jared.Still_at_radisys.com wrote:

><RANT>
>
>I've just spent 30 minutes with our SAP administrator trying to
>convince her that we really don't need to reorganize the tables
>in our production SAP database.
>
>Due to some misinformation in an Oracle Press book, 'Oracle Unleashed'
>I think, she is equating number of extents with fragmentation.
>
>The text she referred me to is in fact discussing 'migrated rows' though
>that term is never used. She has become convinced that if the
>extents allocated for tables are not all in contigous space, some
>very nasty fragmentation will occur.
>
>I tried taking it down to disk and explaining that an OLTP system with
>hundreds of users won't really see much benefit from this, but she
>wasn't really ready for that. :)
>
>Her concern is that there are 29000 extents in an index tablespace.
>This might have something to do with there being 3400 indexes in
>said tablespace.
>
>Total 'wasted' ( honeycomb ) space in this 250 gig DB is < 20 meg. Not
>much to gain there.
>
>The text of the book states that you should expect a '10 to 20 percent
>performance increase' by reorganizing the tables/indexes. No data to
>back it up of course.
>
>This is on a database that performs very well most of the time, outside
>of a couple of custom reports that run too long. No complaints from
>users about slowness.
>
>Arrghhh!
>
>I just had to vent to the list, cuz there's no one here that understands.
>
><\RANT>
>
>Jared
>
>
>

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Author: ltiu
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