When selecting the Sysview Performance Management Option for Db2 for z/OS (IDB2) IS option from the
Database Management Solutions for Db2 for z/OS main menu, the following message was displayed:
Insight User session failed with RC=12 Ensure the Post Install steps have been completed before invoking the user interface
The IDB2 INSIGHT CLIST was missing from the logon proc concatenation.
Adding the CLIST INSIGHT to the logon concatenation resolved the problem.