1 -- 查看表空间容量
 2 SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
 3 D.TOT_GROOTTE_MB "表空间大小(M)",
 4 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
 5 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),‘990.99‘) "使用比",
 6 F.TOTAL_BYTES "空闲空间(M)",
 7 F.MAX_BYTES "最大块(M)"
 8 FROM (SELECT TABLESPACE_NAME,
 9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 ORDER BY 4 DESC;

-- 查看表空间物理位置及运行状态
SELECT T.TABLESPACE_NAME,D.FILE_NAME,
D.AUTOEXTENSIBLE,D.BYTES,D.MAXBYTES,D.STATUS
FROM DBA_TABLESPACES T,DBA_DATA_FILES D
WHERE T.TABLESPACE_NAME =D.TABLESPACE_NAME
ORDER BY TABLESPACE_NAME,FILE_NAME;

--- 每次扩展大小
ALTER DATABASE 
DATAFILE ‘E:\ORACLE\PRODUCT\10.2.0\ORADATA\MYL_DW_DATA_01.DBF‘ AUTOEXTEND 
ON NEXT 500M MAXSIZE UNLIMITED;

--- 直接修改表空间容量为100G
alter database datafile ‘E:\ORACLE\PRODUCT\10.2.0\ORADATA\MYL_DW_DATA_01.DBF‘ resize 102400m; --- 100G容量