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  • Oracle 表空间 (zz)

    //z 2012-07-23 15:54:59 IS2120@CSDN.T2283400633[T5,L121,R1,V72]
    --查询表空间使用情况
      SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
      D.TOT_GROOTTE_MB "表空间大小(M)",
      D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
      TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
      F.TOTAL_BYTES "空闲空间(M)",
      F.MAX_BYTES "最大块(M)"
      FROM (SELECT TABLESPACE_NAME,
      ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
      ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
      FROM SYS.DBA_FREE_SPACE
      GROUP BY TABLESPACE_NAME) F,
      (SELECT DD.TABLESPACE_NAME,
       ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
      FROM SYS.DBA_DATA_FILES DD
      GROUP BY DD.TABLESPACE_NAME) D
      WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
      ORDER BY 1
      --查询表空间的free space
      select tablespace_name,
      count(*) as extends,
      round(sum(bytes) / 1024 / 1024, 2) as MB,
      sum(blocks) as blocks
      from dba_free_space
      group by tablespace_name;
      --查询表空间的总容量
      select tablespace_name, sum(bytes) / 1024 / 1024 as MB
      from dba_data_files
      group by tablespace_name;
      --查询表空间使用率
      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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  • 原文地址:https://www.cnblogs.com/IS2120/p/6745875.html
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