At the startup of the MAT Server, the message 'TN1058E SMSVSAM or MMFSTUFF dataspace not found' is displayed.
Release : 12.0
Component : MAINFRAME APPLICATION TUNER
The MAT server requires some services to be active, and one of these (z/OS) services is not active.
Check if PTF LU03076 is applied, if not, apply it.
Also check with the command D SMS,SMSVSAM,ALL and see if SMSVSAM is completely up and enabled.
If not, restart SMS or IPL to solve the problem..