Re: Physical File Performance

May I ask the reason for the reorgs?  Does performance wax and wane?  
 
Is the physical file keyed in some particular way, so that with the reorg
you can then read the file sequentially and avoid random access?
 
 
 
---------------------------------------------------------
Booth Martin   http://www.MartinVT.com
Booth@xxxxxxxxxxxx
---------------------------------------------------------
 
-------Original Message-------
 
From: Midrange Systems Technical Discussion
Date: Thursday, May 08, 2003 18:27:14
To: 'midrange-l@xxxxxxxxxxxx'
Subject: Physical File Performance
 
We currently have a file on your system in excess of 60 GBytes and 450
Million records.
With the various logical files attached, the file is in excess of 140
GBytes. It's a bit of a nightmare to reorg and the last time it was done it
took 3 days.
The suppliers of our software wish to split the file in to multiple members
on the same physical file. This will in theory allow us to reorg the file on
an individual member basis. 
 
I was wondering does it make sense, will it have an impact on performance.
Or due to the effort involved should we look at a third party product for
doing reorgs in the background.
 
Thanks in advance.
 
 
 
Noel Johnston 
FBD Insurance plc 
FBD House 
Bluebell 
Dublin 12. 
Ireland. 
PH: 00 353 1 4093200 
FAX:00 353 1 4783574 
DDI: 00 353 1 4093381