( resource statement [, int rows] )
Sets the number of rows to be prefetched after successful call to
oci_execute(). The default value for
rows is 1.
In PHP versions before 5.0.0 you must use ocisetprefetch() instead.
This name still can be used, it was left as alias of
oci_set_prefetch() for downwards compatability.
This, however, is deprecated and not recommended.
Returns TRUE on success or FALSE on failure.
See also oci8_.default_prefetch