CIA Report Description

The Cluster Internal Analysis report contains information about the internal structure of data in VSAM clusters. The report has a special format for each of the three different types of VSAM clusters:

Key-sequenced data sets (see CIARPT)
Entry-sequenced data sets
Relative record data sets

These reports were designed to allow as much similarity as possible between them, while still allowing for the differences in data structures of each cluster type. The reports can be generated as a function of the REPORT command, or can be produced as a by-product of the ARCHIVE or BACKUP command. It should be noted that in order to produce these reports, CA Disk must read the clusters with control interval access (which is the method used by default with CA Disk).

Each of the reports has three distinct portions to them:

Information obtained from the catalog (optional)
A graphic display of each control interval in every control area that contains data (also optional)
A statistics section summarizes the key information about the cluster.

The first two sections can be dynamically selected by specifying the CIAOPT= parameter of the REPORT, BACKUP and ARCHIVE commands, or can be controlled by specifying sysparms VSCIACAT and VSCIADET (for detail information, see their sysparm descriptions beginning on VSCIACATy in the Systems Guide.