oracle表数据大小

要查询Oracle表的数据大小，可以使用以下SQL语句：
SELECT round(sum(bytes)/1024/1024/1024, 4) GB FROM user_segments WHERE segment_type = 'TABLE';
这个查询语句会返回表的数据大小，单位是GB。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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