Utilities › TMSFORMT Utility—Format, Extend the TMC and Audit Data Set

TMSFORMT Utility—Format, Extend the TMC and Audit Data Set

TMSXTEND can be used to move the TMC to a new volume, reblock the TMC, and extend the TMC by adding volume ranges or DSNB records. TMSXTEND can also perform these functions however it also has the significant added advantage of being able to be run while tape processing continues. TMSXTEND includes logic to manage the swap-over to a new TMC on all systems sharing the TMC. Refer to the description of the TMSXTEND utility (see page 444) in this guide to learn more about that utility and the functions that it provides that are superior to TMSFORMT.

The TMSFORMT utility must still be used for the TMC maintenance functions listed below if your installation is using non-standard volume serial numbers. TMSFORMT must also still be used to format a new or replace an unusable CA 1 Audit data set.

Note: Once you extend a TMC using TMSXTEND, you must continue to run TMSXTEND, for TMC volume range and DSNB additions or deletions. You cannot run TMSFORMT for anything other than Audit functions after creating a new extended TMC with TMSXTEND.

TMSFORMT is used to perform the following functions:

• Formatting a new TMC

  For new installations of CA 1, TMSFORMT formats the TMC to establish Volume and DSNB records. Initial information regarding the data sets on the volumes may be provided, and ranges of volumes can optionally be marked as inactive (deleted) for future expansion.

• Formatting a new Audit data set or replacing an unusable Audit data set

  TMSFORMT establishes the maximum number of Audit records and the Audit data set block size for new CA 1 installations. In the event the Audit data set is compromised or needs to be expanded, TMSFORMT is used to format a new Audit data set.

• Adding Volume or DSNB records to an existing TMC

  Current CA 1 environments can EXTEND the number of TMC Volume and DSNB records to accommodate library growth. TMSCOPY provides the required input for this procedure.

• Removing Volume records from an existing TMC

  As part of the TMSREMOV procedure, TMSFORMT is used to create a target TMC. See the discussion of TMSREMOV in the section TMSREMOV - Removing TMC Volume Records.

• Performing a split/merge operation

  TMSFORMT is executed to (1) create a target TMC for an internal split/merge or (2) extend an existing TMC to merge information from another TMC. Internal split/merges are used to reduce the number of DSNB records established. Two batch utilities are used in this process; see the discussion of TMSSPLIT and TMSMERGE.

Depending on the TMSFORMT function to be performed, CA 1 may be active, batch active or inactive.

Important! This program should be used only by the personnel responsible for the installation and maintenance of CA 1.

TMSFORMT should not be used for the following functions:

• Restoring a TMC or Audit data set

  The space allocated to the TMC does not require formatting for the TMSCOPY utility to properly recover the database. The Audit data set cannot be restored. If the Audit data set is compromised, a new one must be formatted. See the discussion on Formatting the Audit Data Set.

• Moving a TMC or Audit data set to another DASD unit

  Moving the TMC and Audit data sets to new DASD devices does not require that the new allocation be formatted. A complete procedure for moving the databases is documented in the Programming Guide.

• Marking a range of tapes in an existing TMC as inactive (deleted)

  Once ranges have been formatted in the TMC and the TMC has been used, ranges should be marked inactive only with the TMSDELET utility.

Note: Documentation regarding DASD space requirements for the TMC and Audit data set can be found in the Installation Guide.