LOGON groups real time need

[former_member222850]

Dear Experts,

can some one clarify me the need to create multiple logon groups.

Regards,

Saravana Kumar VS.

[former_member185327 · Accepted solution]

Hi Saravana

Logon groups (or work groups) are configured to dynamically distribute the load being processed by the dialog work processes.

Setting up logon groups helps in uniform distribution of the work load across the available instances. While logging on using a logon group, the ABAP message server is contacted to identify the instance with best performance statistics within the selected logon group. A report runs in SAP every 5 minutes which determines the load across each server and updates in the memory area of the message server. This information will be used by SAP GUI to determine the best instance to distribute the next user.

SPACE will be the default logon group where every instance of SAP including the Central Instance gets assigned. This performs uniform distribution of the dialog workload.

Additionally you can refer the below link.

Logon Load Balancing - Configuration - SAP Library

You will also get the procedure for the configuration from this link.

[former_member222850 · Accepted solution]

Thanks for the info Anurag . i clearly understood its a process of load distribution. that's clear for me , the problem is about , if we even create that how the load gets organized in such a way that it will not form locks on the resources ...

regards,

saravana kumar .

[Former Member · Accepted solution]

The distribution of load/logon through logon load balancing is the logon quality of the available server in the group. So you need to plan the grouping in a way that the resource intensive programs/operations should be running on the server with maximum resources for compute.

Bottom line is that the servers being used should be sized to support the operations intended to run on it. Just creating the different group will not increase the performance if the resources (cpu/memory) are not increased as well.

Also you need to tune your memory parameters in accordance with the SAP Note for your release (SAP, OS & DB) and Work process distribution as per the resources available.

You should also refer to 51789 - Poor user distribution in logon distribution.

Thanks,

Manas

[former_member222850 · Accepted solution]

perfect !! thanks for that srivasthav.

[Former Member]

Hi Saravana,

You can find the details in help.sap.

Recommendations for Logon Load Balancing and Logon Groups - Configuration - SAP Library

This wiki About SMLG - Netweaver Technology - SCN Wiki will help you understand how to configure it.

For any further details on any topic related to SAP Basis you can search for relevant documents in help.sap or SCN and if still any confusion can raise that specific query in a new post and someone will help you out.

Thanks,

Manas