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 2. System enhancements 57
You can change the amount of direct access storage space allocated to the message queue
data sets before a cold start of IMS. Reallocation of the message queue data sets with a
warm start requires the use of the FORMAT and BUILDQ parameters with either the /NRESTART or
/ERESTART command. Allocating less space (than in the previous execution) before an
/NRESTART or /ERESTART BUILDQ can cause the restart to abend.
You can allocate up to 10 data sets for the long message queue and 10 data sets for the short
message queue. Each data set requires an additional DD statement. Ensure that all data sets
of a given message ...
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