[Oracle] I can not log in to OCI but I can not log in.

Symptoms:

The server has Oracle 10g installed and SQLGate installed.

The Oracle connection to the SQLGate on that server works well,

If you try to NET log in to the server from another local client PC, you will not be able to connect.

Workaround:

The reason for not being able to login NET is mostly a firewall problem.

This is because access is blocked by the firewall if you connect to the server after temporarily shutting down the firewall on the server where the DB is installed.

In the firewall settings, please register the IP address of the connecting client.