Automatic refresh (SWU_OBUF) -vs- system performance

[Dart, Jocelyn]

Yes Sergey of course invalidating the buffer reduces system performance
- as the purpose of buffers is to avoid unnecessary reads. 
 
So you should not schedule SWU_OBUF or any other function module that
resets a buffer as that would have ***EXACTLY*** the same performance
degradation as SWU_OBUF.   How bad that performance degradation would be
depends on many factors.  I would not be comfortable using your
suggested approach in a production environment. 
 
Instead SWU_OBUF should be run on an as needed basis only - as per Chris
Barr's excellent example - and remembering that buffers are
automatically refreshed at midnight system time anyway. 
 
So the process should be to make all the possible agent changes, and
then manually execute SWU_OBUF. 
 

Regards, 
Jocelyn Dart 
Senior Consultant 
SAP Australia Pty Ltd. 
Level 1/168 Walker St. 
North Sydney 
NSW, 2060 
Australia 
T   +61 412 390 267 
M   + 61 412 390 267 
E   jocelyn.dart at sap.com 
http://www.sap.com <http://www.sap.com/>  

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________________________________

From: sap-wug-bounces at mit.edu [mailto:sap-wug-bounces at mit.edu] On Behalf
Of Serge Boulay
Sent: Thursday, 12 April 2007 1:35 AM
To: SAP Workflow Users' Group
Subject: Automatic refresh (SWU_OBUF) -vs- system performance



Hi all,

 

My question is around the use of SWU_OBUF. Does anyone know if the use
of this refresh can have any system performance issues? 

 

We are assigning security roles to some task under the possible agent in
order to restrict the forwarding of these items... We also created the
automation of this role assignment when an employee gets the chief
relationship or when he gets the Substitute relationship. All this works
fine but if I get the role assign now, I don't see it in the task
'Display assigned Agent' of the task until I refresh the buffers.

 

My solution is to use function module RH_WF_OM_INDICES_TIMESTAMP_RFS
(which is what SWU_OBUF does) when the automatic role assignment is
done... My fear is that it could reduce system performance if it is done
multiple times a day.

 

Thanks for your feedback!

 

Serge

/n-Spro inc.

 

 

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