表所占用空间

SELECT T.SEGMENT_NAME,
       T.SEGMENT_TYPE,
       SUM(T.BYTES / 1024 / 1024) "占用空间(M)"
  FROM DBA_SEGMENTS T
 WHERE T.SEGMENT_TYPE = 'TABLE'
   AND T.SEGMENT_NAME = '#{TABLENAME}'
   AND T.OWNER = 'MID_JQ02'
 GROUP BY OWNER, T.SEGMENT_NAME, T.SEGMENT_TYPE;