On Thu, 2 Nov 2023 14:56:33 +0200, Binyamin Dissen
wrote:..
>I see there is support for specifically key 9 (which also requires SZERO=NO)
>Tried attaching DISP=NO KEY=NINE,SZERO=NO, altering TCBPKF and it seems OK.
Key 9 is used for CICS user modules to keep them from fatally damaging CICS
which runs key 8. SZERO=NO protects SP0 from being damaged by other TCB's (most
notably programs that violate CICS unenforced restrictions such as STORAGE
OBTAIN). If you want to live within key 9 restrictions, then it's OK. Out of
curiosity, do you plan on using key 9 for something other than a multi-user
address space? If so, what do you see as it's benefit? TSO, UNIX and others do
not use it.
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