查询Oracle表空间使用率

col TABLESPACE_NAME for a20 
col SUM_SPACE(M) for a20 
col USED_SPACE(M) for a20 
col USED_RATE(%) for a20 
col FREE_SPACE(M) for a20 
set linesize 140 
set pagesize 100 
SELECT D.TABLESPACE_NAME, 
SPACE || ‘M’ “SUM_SPACE(M)”, 
BLOCKS “SUM_BLOCKS”, 
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 
SELECT D.TABLESPACE_NAME, 
SPACE || ‘M’ “SUM_SPACE(M)”, 
BLOCKS SUM_BLOCKS, 
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;