CA Hyper-Buf allows you to place constraints upon the dynamic buffering process. Constraints are limits that you set. These limits are honored by the CA Hyper-Buf buffer calculation routines.
Through constraints you can include, exclude, and control the dynamic buffering process for specific SMS classes, jobs, programs, clusters, and program/ddname pairs. You can also place limits on the amount of virtual storage that CA Hyper-Buf is allowed to use for buffers, and you can establish acceptable ranges for most of the buffering variables.
You specify these constraints in a sequential file that is read by GVBDBFON when CA Hyper-Buf is initialized on your system. These controls are discussed in greater detail later in this manual.
You can also modify the constraints at any time by running the GVBREFR utility using either batch or the ISPF panels. This utility allows you to alter the constraints that apply without stopping and restarting CA Hyper-Buf.
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