调整表空间的尺寸有三种方式，如下所示
（1）自动 autoextend 扩展
（2）resize datafile 大小
（3）增加表空间数据文件
1、允许表空间自动扩展
09:33:17 SQL> select file_id,file_name,tablespace_name,AUTOEXTENSIBLE from dba_data_files;
FILE_ID FILE_NAME TABLESPACE_NAME AUT
---------- -------------------------------------------------- ------------------------------ ---
1 /u01/app/oracle/oradata/lx02/system01.dbf SYSTEM NO
9 /u01/app/oracle/oradata/lx02/cuug01.dbf CUUG NO
11 /u01/app/oracle/oradata/lx02/lx02.dbf LX02 NO
7 /u01/app/oracle/oradata/lx02/OLTP01.DBF OLTP NO
6 /u01/app/oracle/oradata/lx02/indx01.dbf INDX NO
5 /u01/app/oracle/oradata/lx02/example01.dbf EXAMPLE YES
4 /u01/app/oracle/oradata/lx02/user01.dbf USERS NO
3 /u01/app/oracle/oradata/lx02/sysaux01.dbf SYSAUX NO
2 /u01/app/oracle/oradata/lx02/rtbs01.dbf RTBS NO
8 /u01/app/oracle/oradata/lx02/test01.dbf TEST NO
10 /u01/app/oracle/oradata/lx02/lx01.dbf LX01 NO
12 /u01/app/oracle/oradata/lx02/undotbs01.dbf UNDO_TBS01 NO
12 rows selected.
----------自动扩展
09:33:20 SQL> alter database datafile '/u01/app/oracle/oradata/lx02/test01.dbf'
09:34:47 2 autoextend on next 10m maxsize 500m;
Database altered.
2、手工改变数据文件尺寸
09:34:57 SQL> alter database datafile '/u01/app/oracle/oradata/lx02/test01.dbf' resize 50m;
Database altered.
3、增加数据文件
09:35:35 SQL> alter tablespace test add
09:35:45 2 datafile '/u01/app/oracle/oradata/lx02/test02.dbf' size 10m;
Tablespace altered.
09:36:03 SQL> select file_id,file_name,tablespace_name,AUTOEXTENSIBLE ,bytes/1024/1024 "size" from dba_data_files;
FILE_ID FILE_NAME TABLESPACE_NAME AUT size
---------- -------------------------------------------------- ------------------------------ --- ----------
1 /u01/app/oracle/oradata/lx02/system01.dbf SYSTEM NO 300
9 /u01/app/oracle/oradata/lx02/cuug01.dbf CUUG NO 10
11 /u01/app/oracle/oradata/lx02/lx02.dbf LX02 NO 10
7 /u01/app/oracle/oradata/lx02/OLTP01.DBF OLTP NO 48
6 /u01/app/oracle/oradata/lx02/indx01.dbf INDX NO 40
5 /u01/app/oracle/oradata/lx02/example01.dbf EXAMPLE YES 400
4 /u01/app/oracle/oradata/lx02/user01.dbf USERS NO 48
3 /u01/app/oracle/oradata/lx02/sysaux01.dbf SYSAUX NO 100
2 /u01/app/oracle/oradata/lx02/rtbs01.dbf RTBS NO 100
8 /u01/app/oracle/oradata/lx02/test01.dbf TEST YES 50
10 /u01/app/oracle/oradata/lx02/lx01.dbf LX01 NO 10
12 /u01/app/oracle/oradata/lx02/undotbs01.dbf UNDO_TBS01 NO 10
13 /u01/app/oracle/oradata/lx02/test02.dbf TEST NO 10
13 rows selected.
CUUG
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