Empty resultset

> Hello,
> 
> I'm trying to get data out of an existing database. The database is
> created with SDA/ SUE. After the connection is and the query is
> excecuted, the resultset stays empty. When I try the same with a
> database I created with SQL it does return the values I requested. 
> 
> The questions I have are: 
> *     Is there a difference if a database is created with SUE/ SDA or
> with SQL.
> *     And why does the resultset stay empty.
> 
> The code I used is the following:
> 
> package javaBenchmark;
> import java.sql.*;
> import java.util.Properties;
> 
> public class DatabaseQuery
> {
>       private Connection connection = null;
>       
>       public static void main(String[] args)
>       {
>               long startConnectieTijd = System.currentTimeMillis();
>               
>               DatabaseQuery db = new DatabaseQuery();
>               
>               long startTijd = System.currentTimeMillis();
>               
>               db.runQuery();
>                               
>               long stopTijd = System.currentTimeMillis();
>                                               
>               System.out.println("Querytijd:  " + (stopTijd -
> startTijd));
>               System.out.println("Totaaltijd: " + (stopTijd -
> startConnectieTijd));
>               
>               db.cleanup();
>       }
>       
>       public DatabaseQuery() 
>       {
> 
>                       
>                       Properties properties = new Properties ();
>                       properties.put("user", "...");
>                       properties.put("password", "...");
> 
>                       
>                       try 
>                       {
>       
> Class.forName("com.ibm.db2.jdbc.app.DB2Driver");
>                               connection =
> DriverManager.getConnection("jdbc:db2:*local", properties);
> 
>                       } catch (Exception e) {                         
>                               System.out.println("Caught exception: "
> + e.getMessage());
>                       }
>               }
>               
>       public void runQuery() 
>       {
>                       try 
>                       {
>                               Statement s =
> connection.createStatement();
>                               // ResultSet rs = s.executeQuery("select
> * from aaa.basicjdbc");
>                               ResultSet rs = s.executeQuery("select *
> from aaa.Yrtpf");
>       
> System.out.println("--------------------");
>                               int i = 0;
>                               while (rs.next()) {
>                                       System.out.println("| " +
> rs.getInt(1) + "|" + rs.getString(2) + "|" );
>                                       i++;
>                               }
>       
> System.out.println("--------------------");
>                               System.out.println("There were " + i + "
> rows returned.");
>                               System.out.println("Output is
> complete.");
>                       } 
>                       catch (SQLException e) 
>                       {
>                               System.out.println("SQLException
> exception: ");
>                               System.out.println("Message:....." +
> e.getMessage());
>                               System.out.println("SQLState:...." +
> e.getSQLState());
>                               System.out.println("Vendor Code:." +
> e.getErrorCode());
>                               e.printStackTrace();
>                       }
>               
>               }
>               
>       public void cleanup() 
>       {
>                try 
>                {
>                       if (connection != null) connection.close();
>                } 
>                catch (Exception e) {
>                          System.out.println("Caught exception: ");
>                          e.printStackTrace();
>                  }
>        }
> }
> 
> I reckon the problem lies in the method runQuery. But I can't figure
> out what it is.
> ResultSet rs = s.executeQuery("select * from aaa.basicjdbc");
> This statement returns the values I requested. It collects the data
> from the database created with SQL.
> 
> ResultSet rs = s.executeQuery("select * from aaa.Yrtpf");
> This statement returns no values. It collects the data from the
> existing database created with SUE/ SDA.
> 
> Thanks,
> Michiel
> 
> 

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