Logon Load Balancing

[younus_ahmed]

Purpose

Load distribution allows you to dynamically distribute the SAP users to application server instances. You can increase the efficiency of individual work groups by setting up multiple logon workgroups that consist of one or more application instances.

You can assign one or more application servers to certain workgroups or specific applications. When users log on to the system, they are automatically logged on to the server that currently has the best performance statistics and/or the fewest users.

Workgroups are configured and maintained centrally from in the SAP system. Each application server group is assigned maximum thresholds for response time and number of users that can log on to any particular group server. You can assign particularly important workgroups with time-critical transactions to application servers with better response time behavior. Setting up logon groups means that the activities of each server become more predictable, which allows you to tune each specific server with respect to the working applications.

To log on to an SAP system, the user needs to know only the name of the SAP system and the logon group. The host name and system numbers are no longer needed when you have logged on.

SAP Logon
Definition
The SAP Logon is a Windows program, which you use to log on to SAP systems on your Windows PC. It mediates between the SAP system and the SAP GUI user interface. The SAP Logon displays a list of available SAP systems and automatically selects servers with the best current response times. It also allows you to modify this list of systems.

Use
Use SAP Logon to log on to SAP systems. Use the defined entries on the Systems tab to start an SAP system. Use this tab to log on to a specific application server or to log on to a group to select the application server with the best response time automatically. Use the defined entries on the Shortcuts tab to start SAP transactions, run reports, or execute system commands directly.

Structure
To start the SAP Logon, perform one of the following:

Double-click the SAP Logon icon on your desktop

Choose the Windows menu Start ® Programs ® SAP Front End ® SAPlogon

The SAP Logon main window appears. It contains the following tabs:


Systems Tab
On this tab you can log on to an SAP system in the following ways:

Log on by double-clicking an entry in the system list
Log on to a system without adding it to the list of system entries
On this tab you can maintain entries by:

Adding entries to the list of systems using group or server selection
Making user-defined connections to SAP systems
Deleting entries
Editing already existing entries in the system list
The Systems Tab
Use
You use the Systems tab to choose from a list of system entries and to log on to an SAP system directly. You also use this tab to maintain those entries and view various details about the parameters of the systems.

Prerequisites
Before you can use the Systems tab you must have an SAP GUI installed on your physical machine.

Depending on the version of your SAP GUI, there is a difference in the functionality, design, and configuration of pushbuttons available.

Features
From the Systems tab you can:

Start an SAP system

To start an SAP system, double-click the icon of the system on your SAP main window.

Add an SAP system entry
If you are using SAP Logon 620 or 640, you can add a system entry using group selection, server selection, or add a user defined entry
If you are using SAP Logon 640 Patch 9 or above or SAP Logon 7.0, you can add an entry by choosing New item.
A wizard that will guide you through the process, appears.

Edit an SAP system entry
If you are using SAP Logon 620 or 640, you can edit a system entry by choosing Properties or Change item, respectively.
If you are using SAP Logon 640 Patch 9 or above or SAP Logon 7.0, you can edit an entry by choosing Change Item.
A wizard that will guide you through the process, appears.

Delete an SAP system entry
To delete a system entry, select it and choose Delete item.

Pushbutton Configurations

SAP GUI Version To add a system, use pushbuttons To edit an entry, use pushbuttons To delete an entry, use pushbuttons
620 New
Group

Server
Properties Delete
640 User Defined
Group

Server
Change Item Delete Item
640 Patch 9 or above
7.0
New Item Change Item Delete Item

To find out the version of SAP GUI that is installed on your physical machine,

For more information on maintaining system entries, see your SAP GUI Help, by opening the SAP Logon and pressing F1.

Shortcut tab
On this tab you can directly execute:

Transactions
Reports
System commands
On this tab you can maintain SAP shortcut entries by:

Adding entries to the list of shortcuts
Deleting entries
Edit already existing entries.

Regards,
Younus (VIT)

[naveedahmed]

Good Document Very Helpful!

Warm Regards...
Mohammed Hassan Naveed
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