oracle表空间使用率统计查询

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参考文献

文献1:http://blog.itpub.net/24104518/viewspace-730682,字符有格式,需要清理一下

文献2:http://www.cnblogs.com/fengyun627/archive/2009/07/27/1532551.html

文献3:http://blog.csdn.net/hproc/article/details/7372265

sql语句格式化:http://web.chacuo.net/formatsql


参考1

--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.file_name                      "表空间路径",         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                -- ,  file_name          FROM   SYS.DBA_DATA_FILES DD            GROUP  BY DD.TABLESPACE_NAME        --,DD.file_name        ) D    WHERE  D.TABLESPACE_NAME = F.TABLESPACE_NAME    ORDER  BY 1   --查询表空间的free spaceselect 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_PctFROM   (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) totalWHERE  free.tablespace_name = total.tablespace_name;

参考2:

SELECT a.tablespace_name                        "表空间名",       total                                    "表空间大小",       free                                     "表空间剩余大小",       ( total - free )                         "表空间使用大小",       Round(( total - free ) / total, 4) * 100 "使用率   %"FROM   (SELECT tablespace_name,               Sum(bytes) free        FROM   DBA_FREE_SPACE        GROUP  BY tablespace_name) a,       (SELECT tablespace_name,               Sum(bytes) total        FROM   DBA_DATA_FILES        GROUP  BY tablespace_name) bWHERE  a.tablespace_name = b.tablespace_name


参考3

SELECT TABLESPACE_NAME "表空间",       To_char(Round(BYTES / 1024, 2), '99990.00')       || ''           "实有",       To_char(Round(FREE / 1024, 2), '99990.00')       || 'G'          "现有",       To_char(Round(( BYTES - FREE ) / 1024, 2), '99990.00')       || 'G'          "使用",       To_char(Round(10000 * USED / BYTES) / 100, '99990.00')       || '%'          "比例"FROM   (SELECT A.TABLESPACE_NAME                             TABLESPACE_NAME,               Floor(A.BYTES / ( 1024 * 1024 ))              BYTES,               Floor(B.FREE / ( 1024 * 1024 ))               FREE,               Floor(( A.BYTES - B.FREE ) / ( 1024 * 1024 )) USED        FROM   (SELECT TABLESPACE_NAME TABLESPACE_NAME,                       Sum(BYTES)      BYTES                FROM   DBA_DATA_FILES                GROUP  BY TABLESPACE_NAME) A,               (SELECT TABLESPACE_NAME TABLESPACE_NAME,                       Sum(BYTES)      FREE                FROM   DBA_FREE_SPACE                GROUP  BY TABLESPACE_NAME) B        WHERE  A.TABLESPACE_NAME = B.TABLESPACE_NAME)--WHERE TABLESPACE_NAME LIKE 'CDR%' --这一句用于指定表空间名称ORDER  BY Floor(10000 * USED / BYTES) DESC;

select tablespace_name,       max_gb,       used_gb,       round(100 * used_gb / max_gb) pct_used  from (select a.tablespace_name tablespace_name,               round((a.bytes_alloc - nvl(b.bytes_free, 0)) / power(2, 30),                     2) used_gb,               round(a.maxbytes / power(2, 30), 2) max_gb          from (select f.tablespace_name,                       sum(f.bytes) bytes_alloc,                       sum(decode(f.autoextensible,                                  'YES',                                  f.maxbytes,                                  'NO',                                  f.bytes)) maxbytes                  from dba_data_files f                 group by tablespace_name) a,               (select f.tablespace_name, sum(f.bytes) bytes_free                  from dba_free_space f                 group by tablespace_name) b         where a.tablespace_name = b.tablespace_name(+)        union all        select h.tablespace_name tablespace_name,               round(sum(nvl(p.bytes_used, 0)) / power(2, 30), 2) used_gb,               round(sum(decode(f.autoextensible,                                'YES',                                f.maxbytes,                                'NO',                                f.bytes)) / power(2, 30),                     2) max_gb          from v$temp_space_header h, v$temp_extent_pool p, dba_temp_files f         where p.file_id(+) = h.file_id           and p.tablespace_name(+) = h.tablespace_name           and f.file_id = h.file_id           and f.tablespace_name = h.tablespace_name         group by h.tablespace_name)order by 4;


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