SELECT T.OWNER, T.SEGMENT_NAME, SUM(T.BYTES) / 1024 / 1024 FROM DBA_SEGMENTS T WHERE T.OWNER = ‘user_name‘ AND T.SEGMENT_NAME = ‘table_name‘ GROUP BY T.OWNER, T.SEGMENT_NAME;
oracle查看表占用磁盘空间
原文：http://www.cnblogs.com/nizuimeiabc1/p/4776853.html
