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VSAM Performance Enhancement › Installing VPE

Installing VPE

When VPE is installed using the configuration, which comes on the install tape, by default it does not operate on any of your VSAM files. You can safely install VPE and have confidence that it does not operate on any files until you tell it to do so.

All of the components of VPE are copied from the distribution tape and installed on your machine when you perform the installation procedure described in the CA Compress Installation Guide. There are no other installation steps necessary for VPE.

Note: The installation procedure installs the VPE load modules in one of the libraries in your LINKLIST. If you repeat the installation procedure (for example. upgrade, reinstall, and so on), be sure that you do not end up with more than one copy of VPE in your LINKLIST. If different releases are mixed, or if the VPE modules are not all properly installed in a LINKLIST library, abends and other problems can occur.

There are several steps required to implement VPE:

  1. Copy the VPE data sets from the distribution tape to the appropriate places on disk. This is the Installation step previously discussed.
  2. Modify the parameters, which control the operation of VPE. These are the VPE Rules Table and the VPE Control DD Statements (discussed below).
  3. Activate the VPE OPEN interface program by running program VPEHINST.
  4. Repeat steps 2 and 3 as required to refine your VPE implementation.