This parameter restricts the maximum number of users per instance.

You can thus restrict how many users can log onto an instance simultaneously. All types of logons are counted (with GUI, RFC, or HTTP).

You can see which users are logged on in the User Overview (transaction SM04).


Work area

Dispatcher/task handler


Integer value

Standard value


Dynamically changeable


Value Range and Syntax

You can specify a number between 0 and 10000.

SAP’s Recommendation

If you should notice that the standard value 200 is too few, increase the value. At any rate you have to restart the instance, since the parameter affects the size of the tm_adm structure of the dispatcher, and the shared memory is created when the instance is started.