Re: UUID's

[D.BALE@xxxxxxxxxxxxx]

OK, you guys have piqued my interest.  What are UUID's and how/why are they
used?

Dan Bale
IT - AS/400
Handleman Company
248-362-4400  Ext. 4952

-------------------------- Original Message --------------------------
Thank's to all who helped with GENUUID(). It's working great!

Richard,

With respect to the latency warning, are you referring to potential
performance bottlenecks, or a risk of duplicate ID's?

Your warning did get me thinking, so I decided to run a crude little test. I
created a PF with a single field to store the UUID value, and no primary
key. I then created a program that called GENUUID() and wrote a PF record
with the result, for 5000 iterations. The program was submitted to three
different subsystems (jobs held) and all three were released within a second
of each other. It took about 8 seconds for all jobs to complete. Finally, I
did an ADDPFC TYPE(*PRIKEY) in order to test for uniqueness. Everything
worked just fine.

Do you think my test was too simplistic?


John Taylor
Canada

----- Original Message -----
From: "Richard Jackson" <richardjackson@richardjackson.net>
To: <MIDRANGE-L@midrange.com>
Sent: Friday, November 10, 2000 07:04
Subject: RE: UUID's


> beware of latency - you may need them very quickly.
>
> Richard Jackson
> Richard Jackson and Associates Ltd.
> IBM Business Partner
> mailto:richardjackson@richardjackson.net
> http://www.richardjacksonltd.com
> Telephone: 1 (303) 808-8058
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