IDMSINFO is the address space used for the Cross Memory Perfmon feature in IDMS version 18.5.
When starting this address space you must start with command S IDMSINFO,REUSASID=YES.
If you do not code the REUSASID=YES parameter you will get the IEF3521 ADDRESS SPACE UNAVAILABLE when Stopping the IDMSINFO address space, and the ASID used will not be reusable until IPL.
NOTE: The reusable ASID feature is activated on a particular z/OS system by specifying REUSASID(YES) in PARMLIB member DIAGxx.
If you do not specify this parameter the reusable ASID feature is not used, even if you code the REUSASID=YES parm on your Start command and the same problem described here will occur.
Release: IDADSO00100-18.5-ADS-for CA-IDMS