1.问题
问题如标题所示，在使用Oracle SQL Developer连接时发现错误：
状态: 失败 -测试失败: IO 错误: The Network Adapter could not establish the connection (CONNECTION_ID=BMRc/8PgR2+0i4PK2tnHQA==)
2.解决方法
1.目前遇到的问题是监听器启动不正确（端口不正确/监听器未启动）
- CONNECTION_ID CONNECTION connection establish 状态connection_id connection establish状态 connection_id establishing connection wordpress database successfully established connection server error successfully established connection establishing verification connection recommende established connection exception办法 establishing verification recommended connection verification connection establish服务器 establishment connections servertoo rejected