查看oracle表空间大小
SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
D.TOT_GROOTTE_MB "表空间大小(M)",
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 FROM SYS.DBA_DATA_FILES DD GROUP BY DD.TABLESPACE_NAME) D WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME ORDER BY 4 DESC
查询结果：
4 USERS 16384 145.56 0.89 16238.44 20.94
3 SYSTEM 4096 417.12 10.18 3678.88 3550
2 UNDO 128 117.12 91.50 10.88 0.63
1 SYSAUX 128 122.81 95.95 5.19 0.69