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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26 IBM IMS Version 12 Technical Overview
2.3.2 Description of online change
The global online change process operates through a master IMS control region, which uses
the Resource Manager (RM) to coordinate the phases of online change with the other IMS
systems in the IMSplex. If you are running an IMSplex that does not use RM, you can specify
the CSL global parameter RMENV=N in the DFSCGxxx IMS.PROCLIB member. If this
parameter is specified, IMS does not require RM and will use type-2 command support.
The following components are required for a global online change in the IMSplex:
An IMSplex defined with CSL and at least one OM
Common Queue Server (CQS), if there is a resource structure in the IMSplex
OLCSTAT data set, which must be initializ ...
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