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RE:[sap-basis] Buffer Tuning

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Posted by Snowy (Certified Netweaver '04/Oracle Basis consultant)
on Nov 19 at 5:17 PM 		Mark this reply as helpfulMark as helpful
Yes David,

He told us at the beginning:
We have a ECC 6 system running on Win2k3.

---------------Original Message---------------
From: Sapcyrus
Sent: Friday, November 19, 2010 1:51 AM
Subject: Buffer Tuning

Hello Gurus,
We have a ECC 6 system running on Win2k3 and has
RAM : 8GB(total) , free : 1.7GB
Swap Configured :28,995,392 ~ 28GB
Swap Free :18,530,440 ~ 18GB
Swap Size : 20,890,272 ~ 20GB


In ST02 we see lot of swaps alerts , for almost all the buffers .
BUFFER Allocated(Kb) / Used(Kb)

Table definition 6,798 5,703
Field definition 31,563 22,767
Initial records 6,625 5,543
program 300,000 278,548
CUA 3,000 2,119
Screen 4,297 4,086
Generic Key 29,297 27,289
Single record 10,000 6,927
Export/import 4,096 2,815


Will you please suggest me how much approx. size should i increase the value of each buffer above to decrease the number of swaps.

Also should i increase the number of Dialog WP from 4 to 8 and Bckgrn WP from 2 to 4 for better performance.

My gut feeling is we also have to upgrade our Physical RAM from 8GB TO 16GB .

Please suggest me about the Buffer sizes.

Thank You.

Regards,
Cyrus
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Snowy
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