oracle查看当前用户权限
--查看所有表空间使用情况 select a.file_id "FileNo",a.tablespace_name "Tablespace_name",
a.bytes "Bytes",
a.bytes - sum(nvl(b.bytes, 0)) "Used",
sum(nvl(b.bytes, 0)) "Free",
sum(nvl(b.bytes, 0)) / a.bytes * 100 "%free"
from dba_data_files a, dba_free_space b
where a.file_id = b.file_id(+)
group by a.tablespace_name, a.file_id, a.bytes
order by a.tablespace_name;
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