IBM Mainframe Discussion List <IBM-MAIN@BAMA.UA.EDU> wrote on 11/21/2007 
10:51:09 AM:
 
> I still do not understand the necessity for the warning about 
MVS-guaranteed
> disablement's requiring a system lock's being held.  One  result of 
acquiring
> a system lock is the turning on of a super bit.  But  you can also turn 
it on
> with an OI instruction.

  Acquiring a lock does not turn on a super bit.  It turns on a bit
in the locks held string.  I would recommend against writing any code 
which turns super bits on or off.
 
Jim Mulder   z/OS System Test   IBM Corp.  Poughkeepsie,  NY

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