查看表空间使用情况

查看表空间的名称及大小：
SQL> select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size
  2  from dba_tablespaces t, dba_data_files d
  3  where t.tablespace_name = d.tablespace_name
  4  group by t.tablespace_name;

查看表空间使用情况
SQL> SELECT D.TABLESPACE_NAME,SPACE "SUM_SPACE(M)",BLOCKS SUM_BLOCKS,SPACE-NVL(FREE_SPACE,0) "USED_SPACE(M)",
  2  ROUND((1-NVL(FREE_SPACE,0)/SPACE)*100,2) "USED_RATE(%)",FREE_SPACE "FREE_SPACE(M)"
  3  FROM 
  4  (SELECT TABLESPACE_NAME,ROUND(SUM(BYTES)/(1024*1024),2) SPACE,SUM(BLOCKS) BLOCKS
  5  FROM DBA_DATA_FILES
  6  GROUP BY TABLESPACE_NAME) D,
  7  (SELECT TABLESPACE_NAME,ROUND(SUM(BYTES)/(1024*1024),2) FREE_SPACE
  8  FROM DBA_FREE_SPACE
  9  GROUP BY TABLESPACE_NAME) F
 10  WHERE  D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)
 11  UNION ALL  --if have tempfile 
 12  SELECT D.TABLESPACE_NAME,SPACE "SUM_SPACE(M)",BLOCKS SUM_BLOCKS, 
 13  USED_SPACE "USED_SPACE(M)",ROUND(NVL(USED_SPACE,0)/SPACE*100,2) "USED_RATE(%)",
 14  NVL(FREE_SPACE,0) "FREE_SPACE(M)"
 15  FROM 
 16  (SELECT TABLESPACE_NAME,ROUND(SUM(BYTES)/(1024*1024),2) SPACE,SUM(BLOCKS) BLOCKS
 17  FROM DBA_TEMP_FILES
 18  GROUP BY TABLESPACE_NAME) D,
 19  (SELECT TABLESPACE_NAME,ROUND(SUM(BYTES_USED)/(1024*1024),2) USED_SPACE,
 20  ROUND(SUM(BYTES_FREE)/(1024*1024),2) FREE_SPACE
 21  FROM V$TEMP_SPACE_HEADER
 22  GROUP BY TABLESPACE_NAME) F
 23  WHERE  D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)
 24  
SQL>/