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HomeDatabaseMysql TutorialOracle 11g 更改sid和dbname oracle 11g 数据库改名

Windows XP +VM 7.1.3 + Red hat linux enterprise 5.5 + Oracle 11g2安装好的oracle 11g2改默认sid orcl 和默认数据库名ORCL分两

环境:

Windows XP +VM 7.1.3 + Red Hat linux enterprise 5.5 + Oracle 11g2

安装好的oracle 11g2改默认sid orcl 和默认数据库名ORCL

分两个阶段描述,第一阶段改sid,第二阶段改dbname

下面描述详细步骤

第一阶段:改sid 

1、登录数据库查看先前的sid,总共三步,大家看的懂得,不懂得跟帖提问。

2、关闭数据库

3、编辑/etc/oratab文件,把所有orcl换成nihao,大部分情况其实就一条。

  • [oracle@localhost ~]$ vim /etc/oratab   
  • 4、更改oracle用户的 .bash_profile文件

  • [oracle@localhost ~]$ vim .bash_profile  
  • 5、使改好的.bash_profile文件生效

  • [oracle@localhost ~]$ . .bash_profile  
  • 7、查看系统环境变量

    效果一生成。

    8、进入$ORACLE_HOME/dbs查看目录,看那些有orcl

    9、更改文件名orcr=》nihao,ORCL=》NIHAO,命令如下:

    10、重行生成密码文件,,并查看

    11、登录数据库,并查看实例名字,结果表明sid已由orcl变成nihao了

    不用退出登录,接着开始第二部分,更改数据库名dbname

    2.1备份控制文件

    2.2关闭并退出数据库

    2.3 orcale 11.2g的控制文件的备份目录为
    /u01/app/oracle/diag/rdbms/nihao/nihao/trace

  • 可以在 alter_nihao.log里找到contolfile的备份trc,sid_ora_nnnn.trc 最新的一个就是。  
  • alter_nihao.log里面有这样一行字样,告诉你哪个是控制备份文件

  • 2.5复制一份

  • [oracle@localhost trace]$ cp nihao_ora_5419.trc nihao.sql  
  • 2.6编辑 nihao.sql,也就是nihao_ora_5419.trc的复制品。

    1)查找STARTUP NOMOUNT语句,将这一行上面的所有行都删除
    2)查找所有以--开始的行,把这些行删除
    3)查找所有的orcl修改为nihao,所有的ORCL修改为NIHAO
    4)找到CREATE CONTROLFILE REUSE DATABASE...语句,将其中的REUSE修改为SET
    5)找到RECOVER DATABASE USING BACKUP CONTROLFILE语句,将其用双横线(--)注释掉

    结果如下:

    2.7生成配置文件

    linux

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