Summary: performance tuning for SAP

From: Nigel Harwood <nharwood_at_cnw06.coles.com.au>
Date: Tue, 25 Jul 1995 06:43:52 +1000 (EST)

Folks,

My original question:
> We are running the SAP application on two 2100's and a 7720 using
> OSF 3.2A + Advfs + LSM(mirroring) + Oracle7.
>
> The tuning of these systems, which work in concert, is obviously a
> very implementation specific and complicated thing and not something
> which most of you would be prepared/able to comment on.
>
> I was wondering though whether any of you who may be running SAP on
> any OSF platform had any comments regarding things which helped your
> performance. These of course may not be readily transferable to our
> environment but then again might be just the pointer we are after.
>
> So, anyone tweaked their kernel variables, extended their memory,
> added more CPU's, etc, and found an SAP performance improvement?

A number of people were interested in anything I learned but
unfortunately there were no new directions for me to try.

The importance of swap and memory sizes on the application servers and
the disks/controllers layout on the DB server was emphasised.

It was also pointed out that Oracle 7.1.6 includes very large memory
(VLM) support with big oracle blocks (BOB) for faster disk I/O access.
This may be a direction for the future.

Thanks to those who replied:

   Hellebo Knut <bgk1142_at_bggfu2.nho.hydro.com>
   msprague_at_MIT.EDU (D. Mark Sprague)
   varias!jin
   Drew Kramer <drew_at_ny.ox.com>

Regards
-- 
<<<<<<<<<<<<<<<<<<<<<<<<<<<  Nigel Harwood  >>>>>>>>>>>>>>>>>>>>>>>>>>
<<  Post: Coles Supermarkets, PO Box 480, Glen Iris 3146, Australia >>
<< Phone: +61 3 9829 6090             E-mail: nharwood_at_coles.com.au >>
<<   FAX: +61 3 9829 5959                                           >>
Received on Tue Jul 25 1995 - 00:14:17 NZST

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