I assume you are referring to the latter half of a binary dump and load. I would load the data with the indexes inactive. Test both offline and online to see which works best for you given your hardware and data and your constraints on downtime. Then take a full offline backup, then rebuild the indexes for the table(s) that you loaded. Be sure to use the newer idxbuild parameters that were added in 10.2B06 (which are not in the 10.2B Database Administration manual).