Configuring SAP Logon Group

[Former Member]

Hi...

I have a CI server and 3 application servers in my production landscape. Currently everyone is logging into the application servers individually and at their own will. This leads to improper utilization of resources. i.e load on one server is more while the other one is less utilized.

I want to configure the LOGON Group, for which I would like to get information from someone who has configured it.

As per my knowledge....in the sap logon groups the request will come to the CI and this in turn will distribute the same to the other application servers which will help load balance all the servers.

Kindly provide me with the inputs to configure the SAP logon group

Thanks in Advance

Alfred

[former_member239282 · Accepted solution]

Hi Alfred,

about Logon Groups

Each SAP application has different resource requirements. Certain applications may therefore require more servers and logon groups. For example, you should assign separate servers for the R/3 application component PP.

In general, each logon group should have two servers. If one server is not available, users are automatically connected to the second server. Servers can be added or removed while the R/3 System is running.

If it is not practical for you to assign separate servers to closely integrated R/3 applications such as the application components SD-MM and FI-CO, you should assign common logon groups to these applications.

You can create a Logon Group or Adding an Instance to a Logon Group in the following way:

1. Choose CCMS->Configuration -> Logon Groups, or call transaction

SMLG.

2. Choose (Create Assignment), and specify the desired name of the

logon group in the Logon Group input field. Enter the name of the

desired Instance that is to belong to the logon group.

3. Repeat the last step until you have entered all instances that are to

belong to the logon group.

4. Save your changes.

To change Properties of an Assignment, a Logon Group, or an Instance

1. Choose CCMS->Configuration->Logon Groups, or call transaction

SMLG.

2. To change the properties of an assignment, double-click the

assignment, and switch to the Properties tab page.

3. You can change the following properties:

- IP address of the application server

Only enter a value in this field if the application server associated

with the instance needs to be addressed by the front end with a

different IP address to the one used for application server-internal

communication. This value applies only for the selected assignment.

- Settings for external RFC call

You can use this indicator to determine whether logon using an

external RFC connection is to be permitted. This value applies to the

selected logon group.

- Threshold values for dialog response time and number of users logged on

If you log on using a logon group, the logon is automatically performed

using the instance of the group that currently has the best dialog

quality. This quality is a key figure that is calculated from the number

of users logged on and the average dialog response time. To allow the

different prerequisites of different instance to be taken into account in

this calculation, you can set threshold values for the dialog response

time and the number of users yourself. The larger the actual values for

response

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