This parameter is used to override the default setting for the owner associated with the Tivoli® Storage Manager (TSM) product.
The owner name is needed to allow you to restore a database that was backed up to TSM from another node. It is possible for the tsm_owner to be overridden during a backup done through DB2 (for example, with the BACKUP DATABASE command).
The default is that you can only restore a database from TSM on the same node from which you did the backup.