October 2011
Intermediate to advanced
510 pages
18h 48m
English
book
IBM IMS Version 12 Technical Overview
by Paolo Bruni, Isabelle Bruneel, Angie Greenhaw, Dougie Lawson, Jorge Alberto Luz Ribeiro, Egide Van Aershot
Content preview from IBM IMS Version 12 Technical Overview
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Chapter 1. IMS 12 at a glance 7
Batch data sharing abend elimination
In previous versions of IMS, a batch data sharing job abended with a U3303 when an OSAM
or VSAM cache structure access failed. In IMS 12, batch jobs survive when these structure
accesses fail. Like online systems, they wait for the resolution to the problem. When the
problem is resolved, the batch jobs continue processing. For example, when a rebuild of a
structure completes, the batch jobs continue.
Reduced logging for DEDB changed data capture
Some users want to use asynchronous changed data capture, but they do not want to write
log records for before images. Prior to IMS 12, asynchronous changed data capture writes
before and after image log records (x’99’). By using IMS ...
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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.