查看表空间大小及已经使用的百分比
复制代码
select a.tablespace_name,a.bytes/1024/1024 "Sum MB",
(a.bytes-b.bytes)/1024/1024 "used MB",
b.bytes/1024/1024 "free MB",
round(((a.bytes-b.bytes)/a.bytes)*100,2) "percent_used"
from
(select tablespace_name,sum(bytes) bytes from dba_data_files group by tables
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