Nulling the journal

If the journal data set fails to back up during the CDS version backup function, the journal will not be nulled. Conversely, the journal is always nulled if the backup of the journal data set is successful, regardless of the success or failure of the backup of the control data sets.

You can null the journal by using the following command: BACKVOL CDS(NULLJOURNALONLY)

NULLJOURNALONLY is an optional subparameter telling the CDS version backup function to only null the journal. No backup copies of the control data sets or journal are made.