Get a tns connection through JDBC.

Question

Hi
I am trying to get tns connection using jdbc to the dabatase. The following code returns an exception "SQLException: IO Error: Unknown host specified ". Most likely becuase the string is missing a host address. Does a tns connection require a host to be included? I am under the assumption, there are only 3 tns properties - username, password and a Net Service Name (e.g. ORCL) . Thanks.
string url = jdbc:oracle:thin:@//username/password/service_name";
try {
Class.forName("oracle.jdbc.OracleDriver");
} catch (java.lang.ClassNotFoundException e) {
System.err.print("ClassNotFoundException: ");
e.printStackTrace();
try {
Connection connection = DriverManager.getConnection(url);
new ConnectionInfo(connection);
} catch (SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
Edited by: 875864 on 10-Jan-2012 16:53

Answer 1

The thin driver needs the host; it doesn't use the tnsnames.ora file
Here is a simple set of code to get a connection
        String driver   = "oracle.jdbc.OracleDriver";
        String url      = "jdbc:oracle:thin:@host:port:sid";
        String username = "SCOTT";
        String password = "tiger";
        try {
            Class.forName(driver);
            Connection con = DriverManager.getConnection(url, username, password);
       ...This link shows how to use the thin or the OCI (thick) drivers. The OCI driver needs an Oracle client and will use tnsnames.ora
http://www.orafaq.com/wiki/JDBC