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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126 IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex Technology
To avoid some of the overhead of putting a message on the queue and then just pulling it off
again, there is a process called LOCAL=YES processing. It is not an external parameter, but
there are actions the user can take to make it more effective.
When a transaction arrives in the front end IMS system, if the following conditions are true:
It can be scheduled immediately into a dependent region.
The entire message fits into one queue buffer.
The transaction is not defined as SERIAL=YES.
The message is not originated from a program-to-program switch.
Then, IMS will ...
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