We have just IPLd a new lpar with CA ACF2 fo z/OS.
I am running DFSMSHSM and trying to issue a BACKVOL CDS command.
The HSM system hangs.
I try to shutdown DFSMSHSM but it still hangs.
I cancel it.
It ends with S438 abend with reason code 0239001C
Whilst looking at JOBLOGS and SYSLOGS i notice that there are messages ACF01004 for
some missing logonids for som DFSMSHSM started tasks
When I created a logonid for the STC it resolved the problem and the function worked correctly.
Either create separate logonids for each task or ensure that there is a default STC logonid defined
in the C(GSO) OPTS record.