Error trying to connect via jdbc

Question

I'm trying to connect via jdbc driver from a java application to a remote db. The code is quite simple
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection
("jdbc:oracle:thin:@dbhost:orcl", "user", "password");
in my CLASSPATH I have the ojdbc14.jar file
When I run this program I get the following error:
Exception in thread "main" java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:334)
at oracle.jdbc.ttc7.TTC7Protocol.handleIOException(TTC7Protocol.java:366
8)
at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:353)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:371)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:551)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:351)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at Test.main(Test.java:12)
Please be aware of the following facts:
1) sqlplus from the same machine has no problem connecting to the db
2) there is no firewall or router between the client and the server
3) As host name I've tried the fqdn (resolved by the DNS), a name I've set up in /etc/hosts, the mere IP address
4) Checking with tcpdump, I've verified that NO network packet actually leaves the client, so the problem completely lies there.
Has anyone some good idea why this happens?

Answer 1

Make sure you are providing correct hostname and listener port number