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Disable SAP USERS to logon multiple times

How to block a user id being logging in for more than twice? i.e. I must restrict the user to be logged in at a time not more than twice (Not sessions, Loggins only).

Set the parameter in RZ10.

login/multi_login_users = set to 1 to activate

login/disable_multi_gui_login = you can put a list of users that should be allow to logon multiple times

List the user IDs separated by commas ",".

Do not leave space characters between user IDs.

Restart the R/3 instance to see the changes.

Requirements

Procedure

Possible causes /Corrective action

• No more R/3 Extended Memory is available.

In this example, work processes 5 and 6 cannot allocate any more Extended Memory because the pool is used up, although its limit for ztta/roll_extension would still allow Extended Memory. They switch into PRIV mode prematurely (see Allocating Memory for User Contexts)

Increase the R/3 Extended Memory pool ( em/initial_size_MB: Extended Memory Pool Size) to prevent the work processes from being switched to PRIV mode.

• The limit for the Extended Memory is too low for most user contexts (set with parameter
ztta/roll_extension). Many contexts allocate heap memory and switch to PRIV mode.

Increase the limit for the Extended Memory using ztta/roll_extension.

• The limit for the Extended Memory for one user context (ztta/roll_extension) is too high. A few user contexts can completely fill the entire Extended Memory, whereby other processes are switched into PRIV mode before the limit is reached.

Decrease the limit for the Extended Memory (set with parameter ztta/roll_extension), or increase the Extended Memory (see ztta/roll_extension).

Symptom

Corrective action