If you manually update the OUNITNAM and DATACLAS fields in the TAPEVOL table, follow these steps:

1. OAM must be down before you make any changes to the UNITNAME or OUNITNAM fields in the DB2 table.
2. If you are using OAM object tape in an IBM automated tape library and opt to return these tape volumes to OAM scratch upon expiration, determine the appropriate esoteric name to insert into the OUNITNAM field.
3. If you are not using OAM object tape in an IBM automated tape library, you can copy the value that is currently in the UNITNAME field to the OUNITNAM field.
4. Set the DATACLAS value based on the Object or Object Backup storage group to which the tape volume belongs.

Related topics: For more information about the SETOAM OAMSCRATCHSYNCH statement, see SETOAM keyword definitions for global level .