-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of R.S.
Sent: Wednesday, February 06, 2013 14:45
To: [email protected]
Subject: Re: z/OS v2.1 preview

W dniu 2013-02-06 14:41, Paul Gilmartin pisze:
> On Tue, 5 Feb 2013 10:16:38 +0200, גדי בן אבי wrote:
>
>> IBM has published z/OS v2.1 preview at 
>> http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?subtype=ca&infotype
>> =an&appname=iSource&supplier=877&letternum=ENUSZP13-0013
>>
> Did anyone notice?:
>
> o Global Resource Serialization support designed to allow programs to
>    synchronously change an exclusive enqueue to a shared enqueue to help
>    reduce contention, in addition to existing support for changing an
>    enqueue from shared to exclusive

I noticed, however the point is in application. Program is allowed to do that, 
but IMHO no one is doing that nowadays. So we must wait for appliction support.


--
Radoslaw Skorupka

---
However, there have been questions in the past, why it was possible to change 
an ENQ from SHR to OLD, but not vise versa. So the demand is there and the 
implementations will follow.

Kees.

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