Verifying a Catalog Structure

As a CMS VSAM user (with or without DOS set ON), you can use the CMS CATCHECK command to invoke the VSE/VSAM Catalog Check Service Aid to verify a complete catalog structure. If you do not specify a catalog name with the CATCHECK command, the catalog specified with the DLBL command is used. CATCHECK produces a print file containing the catalog analysis. For example, issuing:
dlbl ijsysuc f dsn private.cat1 (vsam
and
catcheck
results in a print file containing the VSE/VSAM Catalog Check output.
If you had issued only a DLBL for the master catalog, issuing:
catcheck private.cat1

produces the same result.