centos7.6卸载oracle11G

1、停止数据库

su - oracle

sqlplus / as sysdba

shutdown immediate

exit

[root@vm-1645693049 ~]#su - oracle

$ sqlplus / as sysdba

SQL>

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> exit

2、停止监听

lsnrctl stop

[oracle@vm-1645693049 ~]$lsnrctl stop

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 23-DEC-2016 14:44:52

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=testdb)(PORT=1521)))

The command completed successfully

3、切换到root账户

4、 删除安装目录

rm -rf /data/app/oracle/

rm -rf /data/app/oraInventory/

[root@vm-1645693049 ~]# rm -rf /data/app/oracle/

[root@vm-1645693049 ~]# rm -rf /data/app/oraInventory/

5、 删除/usr/bin下文件

rm -rf /usr/local/bin/dbhome

rm -rf /usr/local/bin/oraenv

rm -rf /usr/local/bin/coraenv

[root@vm-1645693049 ~]# rm -rf /usr/local/bin/dbhome
[root@vm-1645693049 ~]# rm -rf /usr/local/bin/oraenv
[root@vm-1645693049 ~]# rm -rf /usr/local/bin/coraenv 

6、 删除/etc/oratab和/etc/oraInst.loc

rm -rf /etc/oratab

rm -rf /etc/oraInst.loc

[root@vm-1645693049 ~]# rm -rf /etc/oratab
[root@vm-1645693049 ~]# rm -rf /etc/oraInst.loc

 7、删除oracle用户(若要重新安装,可以不删除)

userdel -r oracle

 [root@vm-1645693049 ~]# userdel -r oracle

8、删除用户组(若要重新安装,可以不删除)

groupdel oinstall

groupdel dba

[root@vm-1645693049 ~]# groupdel oinstall

[root@vm-1645693049 ~]# groupdel dba

 9、删除启动服务

chkconfig

 [root@vm-1645693049 ~]# chkconfig

10、重启服务器

shutdown -r now 

 [root@vm-1645693049 ~]# shutdown -r now

到此为止重启后，Linux系统下Oracle数据库已完全删除