Link:
http://sadhus.blog.sohu.com/91144960.html
summary:
这是和网络连接相关的一个错误,Metalink上给出了如下的解决方案:
[@more@]1.set INBOUND_CONNECT_TIMEOUT_listener_name =0 in listener.ora
2. set SQLNET.INBOUND_CONNECT_TIMEOUT = 0 in sqlnet.ora of server.
3. stop and start both listener and database.
4. Now try to connect to DB and observe the behaviour
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