Undocumented Catalog Address Space Command - CATSTATS
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APAR OA15323 documents the F CATA
The REPORT command will list I/O access statistics, as well as BUFNI, BUFND, and STRNO information for each catalog. To limit the command to just a single catalog there is a second format (using the catalog name) which will list only the catalog specified.
The RESET command will reset all of the I/O statistics for the catalogs. If you only wish to reset the statistics for a particular catalog, you can use a second format (using the catalog name) which will reset only the statistics for that catalog.