Oracle12c数据库查看表空间使用情况

通过以下sql语句可以查看Oracle12c数据库中所有表空间的使用情况：

可以通过以下语句查看Oracle12c数据库中所有表空间的使用情况：

 SELECT F.TABLESPACE_NAME,
        (T.TOTAL_SPACE - F.FREE_SPACE) / 1024 "USED (GB)",
        F.FREE_SPACE / 1024 "FREE (GB)",
        T.TOTAL_SPACE / 1024 "TOTAL(GB)",
        (ROUND((F.FREE_SPACE / T.TOTAL_SPACE) * 100)) || '% ' PER_FREE
   FROM (SELECT TABLESPACE_NAME,
                ROUND(SUM(BLOCKS *
                          (SELECT VALUE / 1024
                             FROM V$PARAMETER
                            WHERE NAME = 'db_block_size') / 1024)) FREE_SPACE
           FROM CDB_FREE_SPACE
          GROUP BY TABLESPACE_NAME) F,
        (SELECT TABLESPACE_NAME, ROUND(SUM(BYTES / 1048576)) TOTAL_SPACE
           FROM CDB_DATA_FILES
          GROUP BY TABLESPACE_NAME) T
  WHERE F.TABLESPACE_NAME = T.TABLESPACE_NAME;

可以通过添加筛选条件查看指定表空间的使用情况，代码如下：

 SELECT F.TABLESPACE_NAME,
        (T.TOTAL_SPACE - F.FREE_SPACE) / 1024 "USED (GB)",
        F.FREE_SPACE / 1024 "FREE (GB)",
        T.TOTAL_SPACE / 1024 "TOTAL(GB)",
        (ROUND((F.FREE_SPACE / T.TOTAL_SPACE) * 100)) || '% ' PER_FREE
   FROM (SELECT TABLESPACE_NAME,
                ROUND(SUM(BLOCKS *
                          (SELECT VALUE / 1024
                             FROM V$PARAMETER
                            WHERE NAME = 'db_block_size') / 1024)) FREE_SPACE
           FROM CDB_FREE_SPACE
          GROUP BY TABLESPACE_NAME) F,
        (SELECT TABLESPACE_NAME, ROUND(SUM(BYTES / 1048576)) TOTAL_SPACE
           FROM CDB_DATA_FILES
          GROUP BY TABLESPACE_NAME) T
  WHERE F.TABLESPACE_NAME = T.TABLESPACE_NAME AND T.TABLESPACE_NAME LIKE 'ABC%';

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转载于:http://blog.itpub.net/31403259/viewspace-2143332/