Hello everybody: I want to confirm that I am interpreting the output from the output from this procedure correctly. This is how I run it: begin dbms_space.create_table_cost ( tablespace_name => '&ts_name', avg_row_size => &row_size, row_count => &row_count, pct_free => &pct_free, used_bytes => l_used_bytes, alloc_bytes => l_alloc_bytes ); dbms_output.put_line('Used: '||l_used_bytes); dbms_output.put_line('Allocated: '||l_alloc_bytes); end; If at the end I see that Used value is much smaller than Allocated, that means that I can release some disk space if I were to recreate this table with, say smaller initial extent. Is that correct interpretation? thank you Gene Gurevich Please consider the environment before printing this email. -- //www.freelists.org/webpage/oracle-l