查询ORACLE表空间大小及使用率

select df.tablespace_name "表空间名",totalspace "总空间M",freespace "剩余空间M",round((1-freespace/totalspace)*100,2) "使用率%"

from (select tablespace_name,round(sum(bytes)/1024/1024) totalspace from dba_data_files group by tablespace_name) df,

(select tablespace_name,round(sum(bytes)/1024/1024) freespace

from dba_free_space group by tablespace_name) fs

where df.tablespace_name=fs.tablespace_name;

 

 

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