Quote Originally Posted by gandolf989
But databases normally have more than one tablespace. So you can create different tablespaces with different extent sizes, so if you want to change an extent size, than move it to a different tablespace. I don't understand your confusion.
Nagajuna's comment made it sound like after you make a tablespace LMT, you can still change the extent sizing of the segments in it.

(I know you know move segments from tablespace to another...duh...) But nagajuna didn't mention anything about moving segments from tablespace to tablespace.