At 17:45 -0400 on 08/13/2012, Jim Mulder wrote about Re: REPLACEMENT
ASID SHORTAGE:
"Since DB2 and MQ use the ESAR instruction, they cannot be
called from a job using a reuseable ASID. Most annoying."
I have been told that their are many instances of ESAR
to the caller's address space throughout the DB2 and MQ
code, so there would be considerable cost to convert all
of these to ESAIR.
If the calling sequence (ie: the parms), return codes, and usage of
the two instructions are the same (ie: Changing a ESAR instruction to
a ESAIR one requires no other change to the code) then a simple mass
find/replace and recompile would seem to be a simple way of fixing
the issue. If on the other hand, changing one instruction to the
other requires manual updates/changes to each use then I can see why
they feel that it would be expensive/impractical.
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