计算指定表的数据与索引所占用硬盘大小

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--计算指定表的数据与索引大小：

select segment_name,segment_type,bytes/1024/1024 MB,blocks*8/1024 MB from user_segments
where
segment_name = 'T_MESSAGE_INFO'
or
segment_name in (select index_name from user_indexes where table_name = 'T_MESSAGE_INFO')

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