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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114 IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex Technology
– Deadlock (U777)
– Suspended (U3303)
– Requeued by NDM Exit
DELETE
IMS deletes messages from the shared queues when all processing has completed. The
input messages are deleted when they have been scheduled and committed and the
output messages when they have been delivered and acknowledged. CQS batches
deletes for performance therefore reducing the number of CF accesses.
UNLOCK
IMS may unlock the message if it cannot process it.
A read function gets the first list entry of a message from a queue, which causes it to be
moved to the lock queue. If the message prefix contains a staging queue name, a browse
would then be issued to get the remaining parts of the message ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.