ORA-16662: network timeout when contacting a database
Cause: In response to the issued command, the Data Guard broker attempted to contact a database in the Data Guard configuration. That attempt failed because there was no response from that database after the period of time specified by the CommunicationTimeout configuration property.
Action: Check the Data Guard broker log for the details of the failure. Fix the problem and try the command again.
ORA-16662是Oracle数据库服务器网络管理异常之一,代表“网络超时,无法与数据库连接”,当Oracle客户端请求尝试连接一个数据库但是由于网络超时而未能完成时会出现这一错误。
1.确保当前使用的Oracle客户端是最新版本;
2.检查计算机上TNSNAMES.ORA文件是否正确,并且确认客户端可以使用正确的服务名查询到正确的端口;
3.确保客户端网络连接稳定,让计算机能够正常的访问互联网;
4.检查防火墙、路由器等设备,保证其设置正确;
5.尝试使用正确的IP地址与数据库连接,来替换网络超时可能导致无法正常查找出服务名对应的正确IP地址。