For tablespaces, you should just export the logical data, drop the tablespace, recreate the tablespace with appropriate parameters (pct-used, pct-free), and then import your .dmp file into your new tablespace.

personally, I was always taught to not fiddle with pct-increase. I would imagine that if you are a VERY educated DBA (like Jeff Hunter!) then you might know what you are doing with it. I always leave it at zero and worry about block-size, extent-size, pct-free and pct-used.

anyone else have any comments?

- Magnus