The TMSBLDVR program is invoked by TMSXTEND to read the TMC and create a volume range table based on the ranges it finds, then adding or deleting any volume ranges or DSNBs as requested based on the control statements specified in the SYSIN DD. When executed in standalone mode, TMSBLDVR can be used to identify the volume ranges in an existing TMC, validate volume range or DSNB control statements, and determine the size requirement of the new TMC. The TMSBLDVR utility is a subprogram of TMSXTEND that can also be executed to create a new TMC, replacing functionality provided by the TMSFORMT utility.
TMSBLDVR can also be used to define a new, empty TMC. TMSBLDVR is superior to TMSFORMT for defining a new TMC because of its ability to format alphanumeric volume serial number ranges without the use of the TMSXITE and TMSXITU user exits. Also, when executed in standalone mode with the PARM=NEW parameter is the only time the TMCNEW DD statement is used.
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