In this example, only the BCS is diagnosed; the BCS and VVDS are not compared. The catalog is identified with a ddname. DIAGNOSE defaults to DUMP, NOLIST, and ERRORLIMIT(16).

//DIAGEX1  JOB
//STEP1    EXEC  PGM=IDCAMS
//SYSPRINT DD    SYSOUT=A
//DIAGDD   DD    DISP=SHR,DSN=UCAT1
//SYSIN    DD    *
     DIAGNOSE -
           ICFCATALOG -
           INFILE(DIAGDD)
/*

Job control language statement:

• DIAGDD DD specifies the input data set. Because only the DSNAME is given, the BCS, UCAT1, must be cataloged in the master catalog.

  The DIAGNOSE command scans a BCS, UCAT1. Its parameters are:

• ICFCATALOG indicates the input is a BCS and not a VVDS.
• INFILE(DIAGDD) identifies the DD statement containing the input data set name.