Checking the Dependent Content of a Record

To check the dependent content of catalog records, use the COMPAREDD or COMPAREDS parameters. If you are analyzing a BCS, specify related VVDSs. If you are analyzing a VVDS, specify related BCSs. You can limit dependency checking to selected BCSs or VVDSs, rather than specifying all related BCSs or VVDSs.

For example, the VVDS is checked for an entry that is consistent with the BCS entry. This is not a complete check of the external data set or its entry. It is only a consistency check between the two.

If you are comparing:

A BCS, the VVDS record is checked for dependency.
A VVDS, the BCS record, and the VTOC DSCB are checked for dependency.

The input BCS or VVDS determines which entries in the BCSs or VVDSs are used for comparison. Only entries referenced in the input BCS or VVDS are checked.

If dependency checking is not specified, the external pointers to the BCS are not used or checked. The DIAGNOSE command does not identify VVDSs that should be specified for dependency checking.

To determine which VVDSs are connected to a BCS, use LISTCAT LEVEL(SYS1.VVDS), and specify the BCS in the CATALOG parameter. To determine which BCSs are connected to a VVDS, use PRINT COUNT(1) to print the first record of the VVDS, which contains the names of the related BCSs.