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HomeDatabaseMysql TutorialLinux下完美卸载 Oracle

先说一下Linux 下Oracle没有卸载干净再安装会出现什么后果吧,在一次生产环境安装中,装Oracle时出现一个错误,倒致oracle没有安

先说一下Linux 下Oracle没有卸载干净再安装会出现什么后果吧,在一次生产环境安装中,装Oracle时出现一个错误,倒致oracle没有安装成功,无视之前的安装,再次重新安装oracle,正常安装完成,serverS 也正常,,当应用跑起来时,半个小时后oracel就会自动重启一次,这个原因整整折腾了我一个星期。太痛苦了,希望 大家要注意工作中不要范这样的错误。

1. 用 oracle 用户登录
如果要再次安装, 最好先做一些备份工作。
包括用户的登录脚本,数据库自动启动关闭的脚本,和 Listener 自动启动的脚本。
要是有可能连创建数据库的脚本也保存下来

2. 使用 SQL*PLUS 停止数据库
[oracle@ora920 oracle]$ sqlplus /nolog
SQL> connect / as sysdba
SQL> shutdown [immediate]
SQL> exit

3. 停止 Listener
[oracle@ora920 oracle]$ lsnrctl stop

4. 停止 HTTP 服务
[oracle@ora920 oracle]$ $ORACLE_HOME/Apache/Apache/bin/apachectl stop

5. 用 su 或者重新登录到 root( 如想重新安装可以保留 oracle 用户,省得输入环境变量了 )

6. 将安装目录删除
[root@ora920 /root]# rm -rf /opt/oracle/

7. 将 /usr/bin 下的文件删除
[root@ora920 /root]# rm /usr/bin/dbhome
[root@ora920 /root]# rm /usr/bin/oraenv
[root@ora920 /root]# rm /usr/bin/coraenv

10g在下面的目录:

1. rm -f /etc/oraInst.loc /etc/oratab
2. rm -rf /etc/oracle
3. rm -f /usr/local/bin/coraenv /usr/local/bin/dbhome /usr/local/bin/oraenv

8.

将 /etc/oratab 删除
[root@ora920 /root]# rm /etc/oratab

9. 将 /etc/oraInst.loc 删除
[root@ora920 /root]# rm /etc/oraInst.loc

10. 将 oracle 用户删除 ( 若要重新安装 , 可以不删除 )
[root@ora920 /root]# userdel –r oracle

11. 将用户组删除 ( 若要重新安装 , 可以不删除 )
[root@ora920 /root]# groupdel oinstall
[root@ora920 /root]# groupdel dba

12. 将启动服务删除
[root@ora920 /root]# chkconfig --del dbora

安装失败删除Oracle 10g软件的方法
./runInstall-->deinstall-->所有Oracle 10g软件-->remove
rm -rf /opt/oracle/app/* /opt/oracle/ocfs2/* /usr/local/bin/dbhome /usr/local/bin/oraenv
rm -rf /etc/ora* /opt/oracle/oraInventory/ /opt/oracle/admin /opt/oracle/crs /tmp/* /etc/init.d/init*
delete ASM磁盘
在一个节点上执行
/etc/init.d/oracleasm deletedisk VOL1
/etc/init.d/oracleasm deletedisk VOL2
/etc/init.d/oracleasm deletedisk VOL3
重新创建ASM磁盘
在一个节点上执行
/etc/init.d/oracleasm createdisk VOL1 /dev/sda2
/etc/init.d/oracleasm createdisk VOL2 /dev/sda3
/etc/init.d/oracleasm createdisk VOL3 /dev/sda4
/etc/init.d/oracleasm listdisks
然后在另外节点上执行
/etc/init.d/oracleasm scandisks
/etc/init.d/oracleasm listdisks
重新格式化OCFS2 分区
mkfs.ocfs2 -b 4k -C 32k -N 2 -L ocfs2 /dev/sda1
reboot

linux

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