March 2003
Intermediate to advanced
282 pages
9h 13m
English
book
IMS in the Parallel Sysplex Volume I: Reviewing the IMSplex Technology
by Jouko Jantti, Juan Jesœs Iniesta Mart’nez, Knut Kubein, Bill Stillwell, Gary Wicks
Content preview from IMS in the Parallel Sysplex Volume I: Reviewing the IMSplex Technology
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132 IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex Technology
on the IMS system that has ended. The table is deleted if it was the only IMS system that was
servicing the PSB (other than the local IMS system).
In the Fast Path input edit/routing exit routine, DBFHAGU0, you can specify the how the
message is to be processed. This is known as the sysplex processing code (SPC), and there
are three options:
Local only
Local first
Global only
A design objective should be to process the message on the local IMS system wherever
possible. If the message is processed on the local IMS system, no interaction is required with
the EMHQ structure. This avoids the overhead for:
Performing a CQSPUT to the EMHQ structure
Each IMS system r
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