Linux开放1521端口允许网络连接Oracle Listener
Linux开放1521端口允许网络连接Oracle Listener
症状:
1. TCP/IP连接是通的。可以用ping 命令测试。
2. 服务器上Oracle Listener已经启动。
lsnrctl status 查看listener状态
lsnrctl start 启动Oracle listener
3. 客户端得到的错误信息通常是:ORA-12170: TNS:连接超时
这时,我们基本可以肯定是服务器没有开放1521端口(假设你用默认设置)
解决方法:
1. 假如你是在一个局域网环境,配置了防火墙。那么可以关闭Linux的防火墙。
sudo service iptables stop
2. 编辑iptables, 开放1521端口:
sudo vi /etc/sysconfig/iptables
-A INPUT -p tcp -m state --state NEW -m tcp --dport 1521 -j ACCEPT
:wq
重启防火墙
sudo service iptables restart
保存配置,以便linux重启后依然有效
sudo service iptables save
查看防火墙规则:
sudo iptables -L -n
相关阅读:
Oracle 11g RAC 环境下单实例非缺省监听及端口配置
Oracle配置非默认端口的动态服务注册
Oracle一个实例配置多个listener或多个端口
Oracle RAC 下非缺省端口监听配置(listener.ora tnsnames.ora)
Oracle更改端口后lsnrctl无法启动

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