The server could not be contacted

Discussion of open issues, suggestions and bugs regarding ADO.NET provider for Oracle
Post Reply
Posts: 10
Joined: Tue 23 Mar 2010 19:50

The server could not be contacted

Post by midnit » Wed 10 Oct 2012 19:20

I have an application that works fine locally and remotely but when ran in our dmz it cannot connect to the database and gives the useless error "The server could not be contacted". On that machine I can use Sql Plus and connect to the database and run queries with no issue. I have tried with both tns and with ip and get the same error.

Most likely its a firewall related issue, but besides port 1521 what ports are needed for this to work? Since Sql Plus works and tnsping resolves correctly I did not expect any problems.

How does this need to be configured to properly going through the firewall? It has to be as strict as possible.

Windows 2008 server, 64bit, 64bit and 32bit oracle drivers installed. Running dotConnect 6.80.350.0

Devart Team
Posts: 2138
Joined: Wed 02 Nov 2011 09:44

Re: The server could not be contacted

Post by Pinturiccio » Wed 17 Oct 2012 14:39

We have answered you by e-mail.

Post Reply