RE: Database Size Vs System Performance

The number of objects really doesn't matter as there is really nothing to 
"maintain" unless the object is being used in some manner.

So it doesn't matter if you have 
5 people using 10 out of 100 objects
or
5 people using 10 out of 1000 objects

The system performance will be basically the same.


Having said that, it looks like you'll want to watch your DASD usage when you 
create the new libraries.  The changes in the amount of DASD usage is the only 
real performance impact.


HTH,

Charles Wilt
--
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121
 

> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Scott Johnson
> Sent: Thursday, August 11, 2005 12:23 PM
> To: midrange-l@xxxxxxxxxxxx
> Subject: Database Size Vs System Performance
> 
> 
> How does the number of objects(PFs & LFs) that DB2 has to 
> "maintain" affect
> system performance?
> 
> Right now, Production library sits at 42GB with 175 PFs and 
> 375 LFs.  We also
> currently have a Test library with the same objects, but only 
> a subset of data.
>   We want to add a Development Library and a Training 
> Library.  So the number of
> file objects on the system would double.  The data in the 
> Test library will also
> become a complete copy of production data.  The other two 
> will remain at being
> only a subset of data.
> 
> Thanks,
>     Scott
> 
> 
> IBM iSeries 810-7430 (OS/400 V5R2)
> 5250 Users:  100
> 
> Work with System Status
> % CPU used . . . . . . . :       65.6
> % DB capability  . . . . :       56.8
> Auxiliary storage:
> System ASP . . . . . . :    281.3 G
> % system ASP used  . . :    61.5045
> Total  . . . . . . . . :    281.3 G
> Current unprotect used :     4157 M
> 
> 
> 
> 
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