The CBUFNO= option is
similar to the BUFNO= option that is used for SAS data set processing.
Increasing the value
for the CBUFNO= option might result in fewer I/O operations when your
application reads very large objects from catalogs. Increasing this
value also comes with the normal tradeoff between performance and
memory usage. If memory is a serious constraint for your system,
you should not increase the value of the CBUFNO= option. Do not increase
the value of the CBUFNO= option if you have increased the value of
the CATCACHE= option.
CAUTION:
When using
both the CBUFNO= and CATCACHE= options, if one of the option's value
is set higher than zero, the other option must be set to zero.