java.sql.SQLException: Io 异常: The Network Adapter could not establish the co

错误：
    java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection

程序：
    import java.sql.*;
    ... ...
    try{
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
    //cnn = DriverManager.getConnection("jdbcdbc:test/test@192.168.1.14:1521:ORCL");
    cnn = DriverManager.getConnection("jdbcracle:thin192.168.1.14:1521:ORCL","test","test");
    }
    catch(ClassNotFoundException e1)
    {
        System.out.println("ClassNotFoundException in Connecting:\n  " + e1.toString());
    }
    catch(SQLException e2)
   {                        
        System.out.println("SQLException in Connecting:\n  " + e2.toString());
    }

  ......

有劳各位高手gg或mm指点错误原因。