oracle重启后，启动监听出现Instance "PLSExtProc", status UNKNOWN

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我是靠谱客的博主单薄大叔，这篇文章主要介绍oracle重启后，启动监听出现Instance "PLSExtProc", status UNKNOWN，现在分享给大家，希望可以做个参考。

解决方式：oracle用户下

1.执行sqlplus / as sysdba;

2.修改local_listener参数，sql> alter system set local_listener='';

3,再重新注册服务，sql> alter system register;

4.sql>exit;

5.查看注册情况，$ lsnrctl status

Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "dg1.oracle.com" has 1 instance(s).
Instance "dg", status READY, has 4 handler(s) for this service...
Service "dg1_XPT.oracle.com" has 1 instance(s).
Instance "dg", status READY, has 4 handler(s) for this service...
Service "hr.oracle.com" has 1 instance(s).
Instance "dg", status READY, has 4 handler(s) for this service...
Service "oa.oracle.com" has 1 instance(s).
Instance "dg", status READY, has 4 handler(s) for this service...

service_names中定义的服务都成功动态注册到listener。

远程pl/sql连接数据库成功。

如果plsql还不能连接，请检查防火墙设置

service iptables status

如果防火墙开着，请关闭防火墙：

1)永久性生效，重启后不会复原
开启： chkconfig iptables on 关闭： chkconfig iptables off
2)即时生效，重启后复原
开启： service iptables start 关闭： service iptables stop

原文连接：http://blog.sina.com.cn/s/blog_8345cdd90100v6wx.html