(Originally posted 2006-02-22.)
APAR OA15323 documents the F CATALOG,REPORT,CATSTATS and F CATALOG,RESET,CATSTATS commands which became available with z/OS Release 7.
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.