oracle数据库如何增加表空间大小

有两种方法，一种是为表空间增加数据文件

　　alter tablespace users add datafile 'c:\oracle\ora81\oradata\sid\user002.dbf' size 100M;

　　另一种方法是增加表空间原有数据文件尺寸：

　　alter database datafile 'c:\oracle\ora81\oradata\\sid\users.dbf' resize 1000M;

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注释  

SELECT A.TABLESPACE_NAME,A.BYTES/1024/1024 TOTAL,B.BYTES USED, C.BYTES FREE,
  (B.BYTES*100)/A.BYTES "% USED",(C.BYTES*100)/A.BYTES "% FREE"
  FROM SYS.SM$TS_AVAIL A,SYS.SM$TS_USED B,SYS.SM$TS_FREE C
  WHERE A.TABLESPACE_NAME=B.TABLESPACE_NAME AND A.TABLESPACE_NAME=C.TABLESPACE_NAME;

这个sql语句用来查看当前的表空间情况。

 

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