CACHE or NOCACHE Option
Use the CACHE option to specify a new number of sequence values
that are preallocated in memory for rapid access. The cache size must
be a whole number in the INT range that is less than the number of
values in a cycle (or less than (|max - min)/step|).
The minimum size is 2
preallocated values.
Use NOCACHE to have no values preallocated in memory. (See also the description of SEQ_CACHE_SIZE in CREATE SEQUENCE statement.)