No, actually I cannot give a simple explanation of the profile handles. I
don't suppose you'd buy the simple "used for those cases when adopting
authority won't work, like stream file access. Just take it on faith."?
I can give this comparison. When you do a WRKACTJOB you may see some
Netserver type jobs running under some IBM user. And the joblog may say
"Now servicing user profile SMITTY" or some such thing? Newer versions of
the OS show "Current User" on WRKACTJOB versus job user. These would show
SMITTY instead. Sample
Job: QPWFSERVSO User: QUSER Number: 020103
Servicing user profile CRAIGS from client gdl192.dekko-1.
Get Profile Handle (QSYGETPH)
Release Profile Handle (QSYRLSPH