oracle查看表空间使用率

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select total.tablespace_name,
       round(total.MB, 2) as Total_MB,
       round(total.MB - free.MB, 2) as Used_MB,
       round((1 - free.MB / total.MB) * 100, 2) as Used_Pct
  from (select tablespace_name, sum(bytes) / 1024 / 1024 as MB
          from dba_free_space
         group by tablespace_name) free,
       (select tablespace_name, sum(bytes) / 1024 / 1024 as MB
          from dba_data_files
         group by tablespace_name) total
 where free.tablespace_name = total.tablespace_name;

 

 

 

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