Space announcement We are no longer updating this space, and you cannot comment on this space. The IMAGE COPY PLUS component is now documented in BMC AMI Backup and Recovery for IMS.

CATDS versus NOCATDS

DBRC provides an option for using the system catalog to manage certain characteristics about image copy, change accumulation, and log data sets.

Related topics

How-the-DBRC-interface-works

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.

The CATDS and NOCATDS parameters also affect the dynamic allocation of input image copy and change accumulation data sets.

When you use the CATDS parameter to initialize DBRC, the unit and volume information that is recorded in the system catalog is used to perform the allocation. The unit and volume information recorded in the RECON data sets is ignored.

When you use the NOCATDS parameter to initialize DBRC, the unit and volume information that is recorded in the RECON data sets is used to perform the allocations. Any values stored in the system catalog are ignored.

 

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