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 ;
ALTER DATABASE DATAFILE 'D:\oracle\product\10.2.0\oradata\r2\SYSTEM01.DBF' RESIZE 1500M;
扩容的时候一定要写文件的路径,不然会提示无法找到文件