DFSMShsm renames the ARCPDOX data set to the ARCPDOY data set name dsn2 and the ARCPDOY data set to the ARCPDOX data set name dsn1.
Processing continues with trace output data being written to the data set currently identified by the ARCPDOX data set name.
The data set named by the ARCPDOY DD statement might be dumped or archived at this time if specified by local procedures.
DFSMShsm