Figure 1 shows an example of the output created when comparing a BCS to a VVDS. The records in error are dumped. An error limit of 1 is used, so that only one error is listed.

Figure 1. Sample DIAGNOSE Output

Message IDC21364I indicates that the entry record for SAMPLE.KSDS1.DATA, the data component of a VSAM cluster, is in error. This record is dumped in message IDC21365I, which also identifies the cluster name, SAMPLE.KSDS1. The corresponding VVDS record is also dumped.

The error detected is "CATLG AND VVDS NAMES UNEQUAL" and the associated reason code is 12. The offset provided points to the beginning of a volume cell. The cell contains the volume serial number 339001, which indicates the VVDS is SYS1.VVDS.V339001. Thus, the entry for SAMPLE.KSDS1.DATA in the BCS does not agree with the entry in SYS1.VVDS.V339001.

An inspection of the VVDS entry shows that the name SAMPLE.KSDS1 appears as SAAAAA.KSDS1. To recover, correct the VVDS record by deleting it and then importing SAMPLE.KSDS1.

Message IDC31369I indicates that the DIAGNOSE job was ended prematurely, because of the error limit.

Finally, message IDC21363I lists all the errors detected in this job before the error limit was reached. This message summarizes information from all IDC21364I messages issued during the job.