Causing DFSMShsm and DFSMSdss dumps when DFSMSdss is the data mover and a selected DFSMSdss error occurs

This PATCH command allows you to create a dump of both DFSMShsm and DFSMSdss when DFSMShsm is using DFSMSdss as the data mover. This capability helps you isolate the source of a problem when multiple products are involved.

The occurrence of a selected DFSMSdss error message triggers dumps of both DFSMShsm and DFSMSdss. The SYS1DUMP/NOSYS1DUMP parameters of the SETSYS command determine whether a SYS1DUMP type of dump is taken.

The DFSMSdss error message that triggers the dumps is controlled by the 3-byte MCVTDSSM field in the MCVT. A user wanting to trigger a dump enters the three digits of a DFSMSdss message in the 3-byte MCVTDSSM field. For example, the following PATCH command causes a dump when DFSMShsm uses DFSMSdss as a data mover and DFSMSdss issues error message ADR305E:

PATCH .MCVT.+454 '305' VERIFY(.MCVT.+454 X'404040')

This function is also available when DFSMSdss is invoked during ABARS processing:

PATCH .ABRCB.+1C '308' VERIFY(.ABRCB.+1C X'404040')

When you have the produced the dumps you want, remove the patch to prevent future dumps from occurring.