The data repository

The single-system image of a CICS system or group of CICS systems is provided by the CMAS using the CICSPlex® SM and resource definitions held on the data repository. Each CMAS has its own data repository. The data repository is a VSAM KSDS that is created using a CICSPlex SM post-installation job. As with all data sets, you need to take regular backups of each data repository in your environment. Details of creating and managing a data repository are in the CICS® Transaction Server for z/OS® Installation Guide.

CICSPlex SM definitions and CICS resource definitions held on the data repository can be managed in the following ways:

You can create a visual map of the definitions in your data repository. The map can be of business application services, resource monitoring, real-time analysis, or workload monitoring. You select a starting point for the map, which might be, for example, a CICS system group or an individual resource, and CICSPlex SM displays the starting point and all the definitions that either refer to that definition or are referred to by it. You use either the MAP view command or the batched repository-update facility to create a map.

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