In <[EMAIL PROTECTED]>, on 10/19/2005
   at 02:18 PM, "R.S." <[EMAIL PROTECTED]> said:

>I cannot provide any reference now, but my memory tells me that IBM 
>suggests to use XCF for GRS.

The OP wrote that he had two monoplex systems; that's n ot an option
unless he puts them in a single sysplex.

>Where is security exposure here ?

Both systems opening the same dataset.

>For sure, sharing with GRS more efficient, since it locks dataset,
>not  volume, however it has nothing to do with integrity exposures.

Absolutely wrong. You're assuming that every relevant ENQ is a
RESERVE; some are not. It is not possible to convert an ENQ to a
RESERVE, because there is no way to determine the proper UCB address.
Converting SYSTEM to SYSTEMS in a monoplex doesn't change anything.

>BTW: such exposures can exist when GRS is used, but misconfigured. 

Il va sans dire!
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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