The Network Adapter cocould not establish the connection, adapterestablish

The Network Adapter cocould not establish the connection, adapterestablish


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Problem description

The Network Adapter cocould not establish the connection error occurs when The local machine can connect to the oracle server normally, but when you remotely use sqldeveloper to connect to oracle. This problem may be caused by multiple reasons. This article describes one of the solutions.

Solution

Open net manager. Search for the netManager keyword in the Win7/8 system. In the Windows XP system, choose Start> all programs to find the oracle directory, and then find the net manger program under the oracle directory. For Linux/Mac systems, find this program on your own.

Change the configuration of Listener from localhost to 127.0.0.1, for example: