“IO 错误：套接字读取超时”是什么意思（SQL 开发人员）
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/26334187/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
What does the "IO Error: Socket read timed out" means (SQL developer)
提问by Isaac Motaung
When I try to open SQL developer then I am getting this error:
当我尝试打开 SQL developer 时，我收到此错误：
An error was encountered performing the requested operation:
IO Error: Socket read timed out
The Network Adapter could not establish the connection Vendor code 17002
What is the problem?
问题是什么？
采纳答案by Juan
Typical causes for that error:
该错误的典型原因：
- Your database listener is not running
- It is running, but maybe there is a firewall intervening
- It is running, no firewall issue, but you have provided incorrect connection details.
- 您的数据库侦听器未运行
- 它正在运行，但可能有防火墙干预
- 它正在运行，没有防火墙问题，但您提供的连接详细信息不正确。
回答by elektrykalAJ
Make sure your installation is on a LOCAL drive!
确保您的安装在本地驱动器上！
If your SQL Developer is launched from a network location (specifically, a different location than your database network location), that couldbe the issue.
如果您的 SQL Developer 是从网络位置（特别是与您的数据库网络位置不同的位置）启动的，那可能就是问题所在。
I was having the same problem and I moved my installation to my local driveand it connected right away :)
我遇到了同样的问题，我将安装移动到本地驱动器，并立即连接:)
回答by A.Muqtadir
Above answers are exact causes but to resolve this:
以上答案是确切原因，但要解决此问题：
Go to server machine and login as root then run:
转到服务器机器并以 root 身份登录，然后运行：
( # xhost + )
Then come to oracle user and run:
然后来到oracle用户并运行：
( $ lsnrctl reload LISTENER_NAME )
