Network issue connecting to Oracle

[florida1987]

I build web applications and use different databases.
Today our web server complained about Oracle having a Network error on all our web applications using Oracle from our Windows web server to our Oracle database on a Unix server. All other databases (SQL Server, Access and MySQL) I connect to from the Web server worked except Oracle.
Also, I could connect to Oracle using my Oracle Client with no problems.

Is there a reason why this would only happen to our Oracle connections on our web server? This is the first time in the last 3 years I have experienced this problem with Oracle.

 

[sem]

What kind of connection do you use? OCI? JDBC? What kind of error?

My assumption is

1. name resolving (DNS, switching to Windows domain etc)
2. firewall (blocking listener port)

Regards, Dima

http://seminihin.narod.ru