The Shared User facility enables multiple users to use the same userid (for details, see the Installation and Customization manual).
The MULTUSER parameter, which is applicable to the of the SYSTEM control statement (see SYSTEM statement), specifies how the 'user qualifier' should be created, which is used to:
MULTUser TERML4
COUNT RECONAnyterm [Yes|No|ON|OFF] PORTNumber [Yes|No|ON|OFF]
Do not change the value of the MULTUSER parameter once a shared user has signed on. If you were to change the value of this parameter then:
Subparameters under the MULTUSER parameter are:
Indicates that the last four characters of the terminal LU name should be used to create the 'user qualifier'.
Denotes that a unique number in the range 1-99999999 should be used to create the 'user qualifier'.
Optional values: Yes|No|ON|OFF
Note: RECONANYTERM cannot be specified on the TERML4 subparameter, only on the COUNT subparameter.
If COUNT is specified (which is not the default) then the RECONANYTERM subparameter with the Yes or ON option enables any 'SHARE=Y' user to reconnect to a disconnected user's sessions with the same name from a different terminal. The default behavior is to only allow 'SHARE=Y' users to reconnect to disconnected sessions that were previously connected to the same terminal name as the new user.
Typically, this subparameter would be used when all users with the same name were in fact initiated by one person - for example, a user uses more than one TN3270 client simultaneously.
This subparameter would not normally be used when more than one person uses the same userid as it can allow reconnection to another user's disconnected sessions.
Note: PORTNUMBER cannot be specified on the TERML4 subparameter, only on the COUNT subparameter.
If COUNT is specified (which is not the default) then the PORTNUMBER subparameter with the Yes or ON option specifies that the Telnet client port number should be used during sign-on to uniquely identify the user when the IBM Session Manager TELNET server is in use (that is, when TCP=Yes has been configured).
The PORTNUMBER option is only available to users connected through the IBM Session Manager TELNET server and not to users connected through the IBM TELNET server.
The PORTNUMBER option will only allow users to reconnect to their previously disconnected IBM Session Manager sessions if the user's Telnet client port number is maintained after a disconnect. The user's client software may have this capability, or the user can issue the DISC LOG command when disconnecting from the system.