The details get more confusing.

Oracle DB, NT Server on Novell Network.

Connecting from Web Application to the Database gives,
500 Servlet Exception
java.sql.SQLException: [Oracle][ODBC][Ora]ORA-12535: TNSperation timed out
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6879)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7036)
at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:3028)
at sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:323)

Response from Network/Firewall Techs:
The 1521 ports are open, no trouble here.

Respone from the Web Hosting Techs:
We can't get connected to TCP port 1521 on the database server
hosting this instance of oracle. Packets destined to that
server pass through our firewall, but we never complete
the three-way handshake that initiates a TCP transaction.

This was recently working, last Friday. Of course, everyone contends there have been no changes, what so ever.

No way do I claim to be a network guru, but it has been 3 days, I think thats long enough. We need an answer. I definately want to make sure its not an Oracle DB problem.

I will check the NT server resources. What else can I do?