RELDATBUF

The RELDATBUF option determines the size of buffer used when accessing a file with organization RELATIVE.

Syntax:
RELDATBUF=integer
Parameters:
integer Round up the value that you enter to the next power of 2 that is greater or equal.
0 Do not use buffering.
Properties:
Default: 4096
Comments:

A non-zero value can be beneficial in the following circumstances:

However, in other cases there is likely to be no performance gain. In fact, performance may be degraded.