SET CHARWIDTH 80
SELECT A.TABLE_NAME         || CHR( 9 ) || 
       COUNT( B.COLUMN_ID ) || CHR( 9 ) || 
       SUM( DECODE( B.DATA_TYPE, 'NUMBER', B.DATA_PRECISION, B.DATA_LENGTH ) ) || CHR( 9 ) ||
       MAX( A.NUM_ROWS ) || CHR( 9 ) ||
       MAX( A.AVG_ROW_LEN ) || CHR( 9 ) ||
       MAX( A.BLOCKS ) || CHR( 9 ) ||
       MAX( A.EMPTY_BLOCKS ) || CHR( 9 ) ||
       MAX( A.AVG_SPACE )
       "Dados das Tabelas"
FROM   DBA_TABLES A, 
       DBA_TAB_COLUMNS B
WHERE  A.OWNER = 'OWNER'
AND    A.OWNER = B.OWNER
AND    A.TABLE_NAME = B.TABLE_NAME
GROUP  BY A.TABLE_NAME;