How to check your tablespace setup

select tablespace_name, initial_extent, next_extent, pct_increase, min_extlen from dba_tablespaces where (initial_extent not in (160*1024, 5120*1024, 160*1024*1024) or next_extent != initial_extent or pct_increase != 0 or min_extlen != initial_extent) and contents = ‘PERMANENT’ and tablespace_name!=’SYSTEM’ and tablespace_name not in (select tablespace_name from