I don't know the answer- and I don't have a connection - but such a
table is just a PF - maybe create a table, then use DSPFD to see how SQL
sets the SIZE parameter.
IIRC, when a physical file extends itself it allocates itself another'extent' (?). I'm not sure how big it is, but 20 MB sticks in my mind.
There is a minimal extent, I believe based on the
effective [fixed-length] record size along with the expected number of
records to be added according to the current activity statistics for the