RLS does require CF (coupling facility).
Not everyone has CF.
Assuming one get internal CF for free, there's still effort to transform
monoplex to parallel sysplex (even single-member one). And the risk of
outage when something goes wrong.
Q: What is the performance gain from having Catalog in RLS?
--
Radoslaw Skorupka
Lodz, Poland
W dniu 2015-12-08 o 13:56, Vernooij, CP (ITOPT1) - KLM pisze:
Is RLS really so few used or so scary?
I remember a quote from a z/OS course where RLS for Catalogs was introduced.
The Catalog people asked the VSAM people all kinds of questions because they
were afraid of consequences. The VSAM people replied: come on, your catalog is
only a KSDS, so why are you afraid of RLS? Thereby implying that RLS is so
common and reliable that nobody should worry about it anymore.
Is it that common and reliable?
Kees.
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Kenneth J. Kripke
Sent: 08 December, 2015 9:38
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: RLS implementation for CDS's in DFHSM
This is an inquiry to see if there are shops that have implemented Record
Level Sharing for their CDS's in DFHSM.
1. Concerns are how frequent have other shops experienced failures in
the SMSVSAM asid.
2. Do you have multiple ARCMDxx members to cover in the event of an
SMSVSAM outage?
3. Have you had to go through a recovery scenario due to an SMSVSAM
outage?
Sincerely;
Kenneth J. Kripke
Kenneth J. Kripke
k.kri...@comcast.net
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