Thanks John. Well, supose that i have a database with 3 blocks, with 500 MB, 500 MB and last one 750 MB (variable extent). When add 2 more blocks, the new configuration could be 500, 500, 750, 500, 500 when add using prostrct add <>.st, but if want to be 500, 500,500,500,500, may I have to...