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 5. Database Recovery Control enhancements 143
5.2.2 GENJCL new user keys
DBRC uses, along with other elements, PDS members as templates or skeletal JCL to
correctly run recovery utilities. Usually, you modify the skeletal JCL to reflect the system
configuration of your installation.
When you issue a GENJCL command, the command uses a skeletal JCL execution member,
which contains symbolic keywords. You can define your own symbolic keywords and use the
symbolic keywords that already exist. DBRC substitutes current information for the symbolic
keywords.
IMS 12 increases the number of user keys in skeletal JCL from 32 to 64, keeping the same
conventions and restrictions applied to earlier versions. In addition, the existing %DBTYPE
ke
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