CATDS versus NOCATDS
DBRC provides an option for using the system catalog to manage certain characteristics about image copy data sets.
Refer to the appropriate IMS Utilities reference manual for details about the CATDS and NOCATDS parameters for the INIT.RECON command.
When you initialize the RECON data set by using the NOCATDS parameter, DBRC records the unit and volume in the RECON data sets. Any information in the system catalog is ignored.
When you initialize the RECON data set by using the CATDS parameter, DBRC allows the unit and volume information recorded in the system catalog to override values recorded in the RECON data set. For this reason, it is important that image copy data sets are cataloged when you specify the CATDS parameter.
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