服务端配置scan ip

节点1确认当前监听状态

SQL> show parameter listener;

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

listener_networks                    string

local_listener                       string       (ADDRESS=(PROTOCOL=TCP)(HOST=

                                                 192.168.0.118)(PORT=1521))

remote_listener                      string

节点2 确认当前监听状态

SQL> show parameter listener;

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

listener_networks                    string

local_listener                       string       (ADDRESS=(PROTOCOL=TCP)(HOST=

                                                 192.168.0.119)(PORT=1521))

remote_listener                      string

节点1、节点2 只有本地监听。本地监听的地址 都是  VIP

节点1 修改 remote_listener 为 scan 地址

SQL> alter system set remote_listener=‘(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.120)(PORT=1521))‘;

System altered.

SQL> alter system register;

System altered.

确认以上操作

SQL> show parameter listener;

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

listener_networks                    string

local_listener                       string       (ADDRESS=(PROTOCOL=TCP)(HOST=

                                                 192.168.0.118)(PORT=1521))

remote_listener                      string      (ADDRESS=(PROTOCOL=TCP)(HOST=1

                                                 92.168.0.120)(PORT=1521))

节点2 修改 remote_listener 为 scan 地址

SQL> alter system set remote_listener=‘(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.120)(PORT=1521))‘;

System altered.

SQL> alter system register;

System altered.

确认以上操作

SQL> show parameter listener;

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

listener_networks                    string

local_listener                       string       (ADDRESS=(PROTOCOL=TCP)(HOST=

                                                 192.168.0.119)(PORT=1521))

remote_listener                      string      (ADDRESS=(PROTOCOL=TCP)(HOST=1

                                                 92.168.0.120)(PORT=1521))   

客户端 连接 SCAN_IP

服务端配置scan ip

原文：http://www.cnblogs.com/iyoume2008/p/6081671.html