You can use a z/OS MODIFY command to send a message to a single user or all users who are logged in to the CA MSM web-based interface.
For example, before you shut down CA MSM for maintenance, notify users about the shutdown.
To send a message to a single users or to all users currently logged in, enter the following command:
Specifies the name of the CA MSM application server on your system.
Instructs the CA MSM address space to process this MODIFY request as a messaging request
(Optional) Defines the TSO user ID of the person who you want to send the message to. If not defined, the message is sent to all users who are currently logged in to the server.
Defines a body of the message. Enter free format message text. Do not include commas, even if you are using quotes for the message text itself.
This example sends a message to user USER1:
/F MSMTC,APPL=MSG,USER1,CA MSM will be shut down in 10 minutes
This example sends a message to all users:
/F MSMTC,APPL=MSG,CA MSM will be shut down in 10 minutes