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william.kangweiliang
New User
Joined: 26 Sep 2008
Posts: 22
Location: China
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Hi masters,
When reading the material about CICS. I got some confusion about the difference between VTAM and XRF. Any one could help to make a brief...  |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello William and welcome to the forum,
Please clarify what XRF is to you. I'm aware of VRF in a couple of situations, but am not familiar with XRF. |
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APD1
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Joined: 18 Feb 2009
Posts: 59
Location: India
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| Even I have heard about XCF and not XRF......strange.... |
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william.kangweiliang
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Joined: 26 Sep 2008
Posts: 22
Location: China
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Hi Dick,
thanks for ur reply.
XRF is a part of the docunment:
APPLID
The applid for this CICS region is CICSHTH1. If you want this CICS region to use VTAM® for terminal access or ISC communication, this applid must be defined to VTAM.
If you want this CICS region to use XRF, you must define both a generic and specific applids; for example, by:
APPLID=(CICSID,CICSHTH1),
CICSID is the generic applid of this CICS region, and CICSHTH1 is the specific applid of the active CICS region. With XRF=YES, the active and alternate CICS regions share the same generic applid, but have different specific applids.
The specific applid can be useful for naming those data sets that are unique (for example, dump data sets). Where necessary, it can be used as the second-level qualifier to distinguish the data sets of the active and alternate CICS regions.
The XRF are refered in the context.
URL of this topic:
publib.boulder.ibm.com/infocenter/cicsts/v3r2/index.jsp?topic=/com.ibm.cics.ts.doc/dfha2/topics/dfha2_sample_startupjob.html |
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Robert Sample
Global Moderator
Joined: 06 Jun 2008
Posts: 8696
Location: Dubuque, Iowa, USA
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VTAM (Virtual Telecommunications Access Method) is one of IBM's ways to connect terminals to the mainframe. Compare with TCP/IP.
CICS Extended Recovery Facility (XRF) provides for CICS failover to another region in the event of problems. It requires terminals to be set up differently, per the CICS System Definition Guide, but it doesn't provide a way to connect terminals to a mainframe. |
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william.kangweiliang
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Joined: 26 Sep 2008
Posts: 22
Location: China
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Hi all,
Thanks a lot!. It's much more clear to me now. |
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