ONLOAD : How to specify first & next extent sizes

Hi all, In my efforts to de-fragment my biggest tables, I have come up with a problem. I "onunload" - ed my table to tape, created new dbspaces to hold the new table. The next step therefore is to drop my old table, and "onload" the table back into the new dbspaces. But, HOW do I specify the first and next extent sizes, since onload creates the table as opposed to loading the data into a created table ? I do not see a parameter for first and next extent sizes on the "onload" syntax, so how then does "onload" work ? Also, how can I specify multiple dbspaces for "onload" to load data ?? Secondly, how do I verify that my "onunload" is good ? I have taken an ontape level 0 backup also. Is there any other backup method that I should use, incase onunload fails ?? My table is quite large - about 8 Gig. Thanks for the help Sujata ***************************************** Sujata Soman E-Mail: ssoman@omm.com O'Melveny & Myers, Los Angeles ******************************************