Each optical media library keeps an internal library index of each volume that it contains.
The internal library index for each optical media library is controlled by the Licensed Internal Code. The information in this index is generally not accessible to users or application programs. However, this index must be kept synchronized with the optical index database. This index is re-created when the *RESET rebuild type is specified.
To select the optical media library or libraries that require rebuilding, enter the optical media library name in the Optical media library field on the Reclaim Optical (RCLOPT) display. The name that you enter must correspond to an optical media library that is currently configured on the system.
To reclaim more than one optical media library, issue separate RCLOPT commands for each device rather than using MLB(*ALL). Sequentially using the MLB(*ALL) command reclaims all of the optical media libraries one at a time. Issuing separate RCLOPT commands will allow the reclaiming operations to run in parallel, which will run faster.