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Implement NSCNTL Cache Options

By setting an optimum cache size for the Network Services control file, you can improve the performance of NEWS processing by eliminating as much VSAM activity as possible.

The control file is a database that controls all NEWS CNM record processing. The Control File contains codes and messages that are used to control NEWS functions. It is front-ended by a cache that holds the most recently retrieved records from the Control File. Once full, the cache discards an infrequently referenced record when a new record is added.

Note: The cache is an in-storage vartable. Actioning this parameter group results in the vartable being deleted and redefined.

To implement the NSCNTL cache options

1. Enter /PARMS at the prompt.

   The Parameter Groups panel appears.

2. Enter U beside the NSCNTLCACHE parameter group.

   The NSCNTLCACHE - NSCNTL Cache Size panel appears.

3. Enter a value in the Maximum Number of Records Cached field, or leave the default value.
4. Press F6 (Action).

   The entries are actioned.

5. Press F3 (File).

   The entries are saved.