On 12/18/2006 5:23 AM, R.S. wrote:
BTW: I think it is unrelated to my doubt. My questions is (I'll try to rephrase it) : Does RESERVE cause lock on local system as regular ENQ does ?


When you issue a RESERVE you get an immediate ENQ with SYSTEMS scope,
and (once the ENQ is granted, I believe) the bit turned on in the UCB
that will cause the system to add a CCW to set device allegiance so only
that system can access the device until you release the RESERVE.

RNL processing can affect exactly what happens, of course.

        Walt

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