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Frank

I think "connection refused" usually means there's no server. So, yes - it
could be the port number.

Regards

Peter Hearty
Lutris Technologies UK Ltd.
-----Original Message-----
From: Frank Mirche <frank.mirche@netcologne.de>
To: instantDB@enhydra.org <instantDB@enhydra.org>
Date: 27 July 2000 07:55
Subject: AW: InstantDB: connection problems


Hello Peter,

sorry it does compile but won't start because of connection problemt to my
localhost. Has it something to do with the Portnumber a have not entered. If
yes, which can it be.
commsql is working fine.

Thanks Frank


F:\Downloads\RMI_JDBC>java TestClient
TestClient:jdbc:rmi://goal-pdc/jdbc:idb:F:/InstantDB/Examples/sample.prp
java.rmi.ConnectException: Connection refused to host: goal-pdc; nested
exceptio
n is:
        java.net.ConnectException: Connection refused: no further
information
java.net.ConnectException: Connection refused: no further information
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
        at
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:125)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:112)
        at java.net.Socket.<init>(Socket.java:269)
        at java.net.Socket.<init>(Socket.java:98)
        at
sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirect
SocketFactory.java:29)
        at
sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMaster
SocketFactory.java:124)
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:497)
        at
sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:194
        at
sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:178)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
        at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
        at RmiJdbc.RJConnection.<init>(RJConnection.java:75)
        at RmiJdbc.RJDriver.connect(RJDriver.java:131)
        at java.sql.DriverManager.getConnection(DriverManager.java:457)
        at java.sql.DriverManager.getConnection(DriverManager.java:159)
        at TestClient.main(TestClient.java, Compiled Code)
java.sql.SQLException: Connection refused to host: goal-pdc; nested
exception is
:
        java.net.ConnectException: Connection refused: no further
information
        at RmiJdbc.RJDriver.connect(RJDriver.java:137)
        at java.sql.DriverManager.getConnection(DriverManager.java:457)
        at java.sql.DriverManager.getConnection(DriverManager.java:159)
        at TestClient.main(TestClient.java, Compiled Code)

F:\Downloads\RMI_JDBC>

> -----Ursprüngliche Nachricht-----
> Von: owner-instantDB@enhydra.org [mailto:owner-instantDB@enhydra.org]Im
> Auftrag von Peter Hearty
> Gesendet am: Mittwoch, 26. Juli 2000 19:07
> An: instantDB@enhydra.org
> Betreff: Re: InstantDB: connection problems
>
> Frank
>
> When you say it doesn't compile, what error message do you get.
> If it's the
> code below then you need to comment out the
>
> file://String url = "jdbc:idb=sample.prp"; (geändert in)
>
> line. The commsql url you supplied should be OK. Again, though, I need to
> know what error message you're getting.
>
> Regards
>
> Peter Hearty
> Lutris Technologies UK Ltd.
> -----Original Message-----
> From: Frank Mirche <frank.mirche@netcologne.de>
> To: Instantdb <instantdb@enhydra.org>
> Date: 26 July 2000 18:33
> Subject: InstantDB: connection problems
>
>
> hello,
>
> i'm trying to test the rmi_jdbc sample below but it does not
> connect to the
> database and java will not compile the following syntax:
>
> file://String url = "jdbc:idb=sample.prp"; (changed to)
> String url = "jdbc:idb:F:/InstantDB/Examples/sample.prp";
>
> by the way..
> when i have to connect to a *.prp on a diffrent drive in commsql
> what is the correct syntax ??
> Enter the URL for the database:
> jdbc:idb:F:/InstantDB/Examples/sample.prp  (does not work)
>
> Thanks Frank
>
>
>
> /**
> * RmiJdbc client/server JDBC Driver
> * (C) GIE Dyade (Groupe BULL / INRIA Research Center) 1997
> *
> * @version     1.0
> * @author      Pierre-Yves Gibello (Pierre-Yves.Gibello@inrialpes.fr)
> */
>
> import java.sql.*;
> import java.net.InetAddress;
>
> /**
> * This is a sample program for RmiJdbc client/server jdbc Driver
> * RmiJdbc relies on Java RMI for jdbc objects distribution
> */
> public class TestClient {
>
>   public static void main(String args[]) {
>
>     try {
>
>       // Register RmiJdbc Driver in jdbc DriverManager
>       // The call to newInstance() is necessary on some platforms
>       // (with some java VM implementations)
>       Class.forName("RmiJdbc.RJDriver").newInstance();
>
>       // Test with InstantDB free java database engine
>       // See http://www.instantdb.co.uk for info & download
>       file://String url = "jdbc:idb=sample.prp"; (geändert in)
> String url = "jdbc:idb:F:/InstantDB/Examples/sample.prp";
>
>
>       // RMI host will point to local host
>       // A port number may be specified as 1st argument to the program
>
>       String portSpec = "";
>       if(args.length > 0) {
>         Integer.parseInt(args[0]); // Check port number is an integer
>         portSpec = new String(":" + args[0]);
>       }
>
>       String rmiHost = new String(
>        "//" + InetAddress.getLocalHost().getHostName() + portSpec);
>
>       // RmiJdbc URL is of the form:
>       // jdbc:rmi://<rmiHostName[:port]>/<jdbc-url>
>
>       String jurl = "jdbc:rmi:" + rmiHost + "/" + url;
>       System.out.println("TestClient:" + jurl);
>       Connection c = DriverManager.getConnection(jurl);
>
>       Statement st = c.createStatement();
>       ResultSet rs = st.executeQuery("select * from import1");
>
>       ResultSetMetaData md = rs.getMetaData();
>       while(rs.next()) {
>         System.out.print("\nTUPLE: | ");
>         for(int i=1; i<= md.getColumnCount(); i++) {
>           System.out.print(rs.getString(i) + " | ");
>         }
>       }
>
>       rs.close();
>
>     } catch(Exception e) {
>       e.printStackTrace();
>     }
>   }
> };
>
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