-- To identify space-bound objects.  If all is well, no rows are returned.
-- If any space-bound objects are found, look at value of NEXT extent 
-- size to figure out what happened.
-- Then use coalesce (alter tablespace <foo> coalesce;).  
-- Lastly, add another datafile to the tablespace if needed.
--
-- 11/30/98

SELECT a.table_name, a.next_extent, a.tablespace_name
FROM all_tables a,
    ( SELECT tablespace_name, max(bytes) as big_chunk
      FROM dba_free_space
      GROUP BY tablespace_name ) f
WHERE f.tablespace_name = a.tablespace_name
                AND a.next_extent > f.big_chunk
/