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查看所有表空间大小

查看所有表空间大小

作者: 一点也不想吃辣 | 来源:发表于2017-09-04 10:31 被阅读24次
    1. 查看所有表空间大小
    
    SQL> select tablespace_name,sum(bytes)/1024/1024 from dba_data_files
      2  group by tablespace_name;
    
    2. 已经使用的表空间大小
    SQL> select tablespace_name,sum(bytes)/1024/1024 from dba_free_space
      2  group by tablespace_name;
    
    3. 所以使用空间可以这样计算
    
    select a.tablespace_name,total,free,total-free used from 
    ( select tablespace_name,sum(bytes)/1024/1024 total from dba_data_files
       group by tablespace_name) a, 
    ( select tablespace_name,sum(bytes)/1024/1024 free from dba_free_space
       group by tablespace_name) b
    where a.tablespace_name=b.tablespace_name;
    
    
    4. 下面这条语句查看所有segment的大小。
    Select Segment_Name,Sum(bytes)/1024/1024 From User_Extents Group By Segment_Name
    
    5. 还有在命令行情况下如何将结果放到一个文件里。
    SQL> spool out.txt
    SQL> select * from v$database;
    SQL> spool off
    
    
    
    
    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 4 DESC
    
    
    
    
    
    --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;
    
    
    
    
    
    
    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 4 DESC
    

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