查看表空间大小

SELECT a.tablespace_name "表空间名",total 表空间大小,free 表空间剩余大小,
(total-free) 表空间使用大小,
ROUND((total-free)/total,4)*100 "使用率 %"
FROM (SELECT tablespace_name,SUM(bytes) free FROM DBA_FREE_SPACE
GROUP BY tablespace_name ) a,
(SELECT tablespace_name,SUM(bytes) total FROM DBA_DATA_FILES
GROUP BY tablespace_name) b
WHERE a.tablespace_name=b.tablespace_name

调整和表空间大小

SELECT * FROM DBA_DATA_FILES
alter database datafile 'G:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\JTSXYX' resize 200M;