Specifies whether to swap the DFSMShsm log data sets automatically at startup. Because the problem determination aid (PDA) logs are automatically swapped at startup, you should specify LOGSW=YES to synchronize the DFSMShsm logs with the PDA logs. If you specify LOGSW=YES, you must also change your JCL disposition (DISP) to DISP=OLD for the LOGX and LOGY data sets.

For a discussion of the DFSMShsm log data sets, see DFSMShsm log data set.