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Oracle 设置表空间自增长

Jun 07, 2016 pm 02:54 PM
database

查了很多资料发现原来是Oracle表空间限制,导致无法继续导入数据的原因。如果在建立数据库时没有设置,Oracle 默认的表空间大小为

使用Oracle10g建立数据库后,向数据库中导入了部分数据,第二天继续向数据库中导入数据表时发生错误:

Underlying DBMS error  ORA-01653

Oracle 设置表空间自增长

查了很多资料发现原来是Oracle表空间限制,导致无法继续导入数据的原因。如果在建立数据库时没有设置,Oracle 默认的表空间大小为400M,当数据库中数据量达到这个值,再向数据库中导入数据就会报错。解决方法是扩展表空间。可以选择将表容量扩大,比如扩展到5G,或者当表空间不够时每次自动增加一定的容量,如每次自增200M。

下面列出详细过程:

1.通过sql plus 命令登录数据库。

在命令行下输入sqlplus “登录用户名/口令 as 登录类型”就可以登录,系统内建的用户名常用的是sys,密码是在安装oracle过程中设置的密码,清务必牢记,如果用sys帐户登录,登录类型一定要是sysdba。

2.查看各表空间分配情况。

select tablespace_name, sum(bytes) / 1024 / 1024  from dba_data_files

group by tablespace_name;

3.查看各表空间空闲情况。

select tablespace_name, sum(bytes) / 1024 / 1024  from dba_free_space  group by tablespace_name;

4.更改数据表大小(10G)

alter database datafile '/ora/oradata/radius/undo.dbf' resize 10240m;

5.设置表空间不足时自动增长

5.1查看表空间是否自动增长

SELECT FILE_NAME,TABLESPACE_NAME,AUTOEXTENSIBLE FROM dba_data_files;

5.2 设置表空间自动增长

ALTER DATABASE DATAFILE 'c:\SmartDB01.ora' AUTOEXTEND ON;//打开自动增长

ALTER DATABASE DATAFILE 'c:\SmartDB01.ora' AUTOEXTEND ON NEXT 200M ;//每次自动增长200m

ALTER DATABASE DATAFILE 'c:\SmartDB01.ora' AUTOEXTEND ON NEXT 200M MAXSIZE 1024M;//每次自动增长200m,数据表最大不超过1G

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