Utilities › TMSXTEND Utility—Dynamic TMC Extend Process Control Program

TMSXTEND Utility—Dynamic TMC Extend Process Control Program

Use the TMSXTEND utility to dynamically build a new TMC while tape processing is allowed to continue across the shared TMC environment.

You can add or remove volume ranges by specifying the desired ranges as SYSIN parameters. The TMSXTEND utility saves the volume ranges internally in a new TMC record type, the Volume Definition Record.

Note: For information about Volume Definition Records, see the Programming Guide.

You can also use TMSXTEND to assign a new unique RNAME to all enqueue or reserves of the TMC and AUDIT file. Unique RNAME is especially important when multiple TMCs exist within a single GRS/plex or MIM/plex environment. You can use the unique RNAME instead of TMS-TMC, TMS-AUD, and TMSAPEC. The unique RNAME includes the full DSN of the TMC and AUDIT files and the volser that the files reside upon.

To verify the shared TMC environment before you perform a switch, run TMSXTEND in TEST mode. TMSXTEND also provides a RECOVER function to return the TMC to its previous state in the event of a failed extend attempt. The utility is designed to check as many environmental details as possible before proceeding with a TMC switch, greatly reducing the likelihood of a problem.

TMSFORMT was previously used to define a new TMC or Audit and to extend an existing TMC. TMSXTEND now performs this functions, except for the formatting of a new Audit file. Customers with nonstandard volume serial numbers should continue to use TMSFORMT to extend the TMC or define a new TMC.