[b]一、关闭数据库[/b] [oracle@RHEL5]$sqlplus / as sysdba SQL>shutdown immediate; [b]二、关监听[/b] [oracle@RHEL5]$lsnrctl stop 三、删除oracle_base 我这里切换到了root [root@RHEL5]#rm -rf /s01 [b]三、清除残余文件[/b] [root@RHEL5]# rm -f /usr/local/bin/dbhome [root@RHEL5]# rm -f /usr/local/bin/oraenv [root@RHEL5]# rm -f /usr/local/bin/coraenv [root@RHEL5]# rm -f /etc/oratab [root@RHEL5]# rm -f /etc/oraInst.loc [root@RHEL5]# rm -f /opt/ORCL* [b]四、删除用户和组（如果要重建可以不删，省得再弄变量）[/b] [root@RHEL5]#userdel -r oracle [root@RHEL5]# groupdel oinstall [root@RHEL5]# groupdel dba