1.查看的SQL语句如下:http://www.cndba.cn/hbhe0316/article/87251

set pagesize 500
set lin 120
col TABLESPACE_NAME for a20
col SUM_SPACE(M) for a15
col SUM_BLOCKS for a35
col USED_SPACE(M) for a15
col USED_RATE(%) for a15
col FREE_SPACE(M) for a15


SELECT D.TABLESPACE_NAME,  
       SPACE || 'M' "SUM_SPACE(M)",  
       SPACE - NVL (FREE_SPACE, 0) || 'M' "USED_SPACE(M)",  
       ROUND ( (1 - NVL (FREE_SPACE, 0) / SPACE) * 100, 2) || '%'  
          "USED_RATE(%)",  
       FREE_SPACE || 'M' "FREE_SPACE(M)"  
  FROM (  SELECT TABLESPACE_NAME,  
                 ROUND (SUM (BYTES) / (1024 * 1024), 2) SPACE,  
                 SUM (BLOCKS) BLOCKS  
            FROM DBA_DATA_FILES  
        GROUP BY TABLESPACE_NAME) D,  
       (  SELECT TABLESPACE_NAME,  
                 ROUND (SUM (BYTES) / (1024 * 1024), 2) FREE_SPACE  
            FROM DBA_FREE_SPACE  
        GROUP BY TABLESPACE_NAME) F  
 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)  
UNION ALL                                                           --如果有临时表空间  
SELECT D.TABLESPACE_NAME,  
       SPACE || 'M' "SUM_SPACE(M)",  
       USED_SPACE || 'M' "USED_SPACE(M)",  
       ROUND (NVL (USED_SPACE, 0) / SPACE * 100, 2) || '%' "USED_RATE(%)",  
       NVL (FREE_SPACE, 0) || 'M' "FREE_SPACE(M)"  
  FROM (  SELECT TABLESPACE_NAME,  
                 ROUND (SUM (BYTES) / (1024 * 1024), 2) SPACE,  
                 SUM (BLOCKS) BLOCKS  
            FROM DBA_TEMP_FILES  
        GROUP BY TABLESPACE_NAME) D,  
       (  SELECT TABLESPACE_NAME,  
                 ROUND (SUM (BYTES_USED) / (1024 * 1024), 2) USED_SPACE,  
                 ROUND (SUM (BYTES_FREE) / (1024 * 1024), 2) FREE_SPACE  
            FROM V$TEMP_SPACE_HEADER  
        GROUP BY TABLESPACE_NAME) F  
 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)  
ORDER BY 1;

2.查看结果如下

TABLESPACE_NAME      SUM_SPACE(M)    USED_SPACE(M)   USED_RATE(%)    FREE_SPACE(M)
-------------------- --------------- --------------- --------------- ---------------
OGG_TBS              5120M           251.81M         4.92%           4868.19M
RMAN_TS              1024M           16.94M          1.65%           1007.06M
SYSAUX               1550M           1304.5M         84.16%          245.5M
SYSTEM               1180M           1170.06M        99.16%          9.94M
TBS001               500M            1M              .2%             499M
TEMP                 906M            906M            100%            0M
UNDOTBS1             9739M           18.25M          .19%            9720.75M
USERS                1871.25M        1331.5M         71.16%          539.75M

8 rows selected.

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oracle