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The CTBDBVCG utility changes the maximum number of generations specified for one or more database variables. It is useful whenever the number of generations must be changed but is most often used when changing the status (mode) of variables from test to production. The utility can be invoked in batch mode as described in "Activating the Utility."
The number of generations to be retained in the database can be increased or decreased. The content of existing variable generations can be retained or deleted. All other relevant aspects of the variables are retained, including definitions and group information.
It is possible to change the number of generations of all variables, groups of variables (with a common group name prefix), or one or more variables of the same group (with a common variable name prefix) in one activation of the CTBDBVCG utility.
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