oracle数据库表空间多大

根据引用和，可以使用SQL查询来获取Oracle数据库中表空间的大小。通过执行以下SQL语句可以获取表空间的大小：

SELECT tablespace_name, sum(bytes)/1024/1024 AS total_size_mb
FROM dba_data_files
GROUP BY tablespace_name;

这个SQL查询将返回每个表空间的名称和总大小（以MB为单位）。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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