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Quering DB2

Posted on 2003-11-18
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Last Modified: 2011-10-03
Why is it that I am able to connect to and query a db2 database through my JSP code but when I execute the same class through the command line, it returns this error?

Error:[IBM][JDBC Driver] CLI0601E  Invalid statement handle or statement is closed. SQLSTATE=S1000

Using the DB2JAVA.jar driver.

Thanks

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Question by:chambers777
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Expert Comment

by:SuperKarateMonkey
ID: 9774118
Show the code for both the JSP and the main class.
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Author Comment

by:chambers777
ID: 9774166
Both JSP and main are using the same code..... two classes. MAIN is in the second

import java.io.*;
import java.util.*;
import java.sql.*;


public class QueryBean{
      private String driverName = "COM.ibm.db2.jdbc.net.DB2Driver";
      private String dbURL = "jdbc:db2://sliudv36.co.com:61342/meds";
      private String username = "user";
      private String password = "pass";
      public PreparedStatement ps = null;
      Connection con;
      String error;
      public Statement stmt;
      public ResultSet result;
        public String n;
      
      public QueryBean(){
         
      }
      
      public void connect() throws ClassNotFoundException, SQLException, Exception {
            try {
              Class.forName(driverName).newInstance();
              con = DriverManager.getConnection(dbURL, username, password);
            } catch (ClassNotFoundException cnfe) {
              error = "ClassNotFoundException: Could not locate DB driver.";
              throw new ClassNotFoundException(error);
            } catch (SQLException cnfe) {
              error = "SQLException: Could not connect to database.";
              throw new SQLException(error);
            } catch (Exception e) {
              error = "Exception: An unknown error occurred while connecting to database.";
              throw new Exception(error);
            }
      }
      
      public void disconnect() throws SQLException {
            try {
              if ( con != null ) {
                  con.close();
              }
            } catch (SQLException sqle) {
              error = ("SQLException: Unable to close the database connection.");
              throw new SQLException(error);
            }
      }
}

import java.text.SimpleDateFormat;
import java.sql.*;
import java.util.*;
import java.io.*;

public class MedsQB extends QueryBean{
      String queryString = null;
      
      public static void main(String args[]){
            MedsQB a = new MedsQB();
            
            try{
                  a.connect();
                  System.out.println("Successfully connected.");

                  ResultSet rs = a.executeSelect("SELECT * FROM DEPARTMENT;");                  
      
                   while(rs.next()) {
                          System.out.println(rs.getString("div_nm"));
                  }
                  a.disconnect();
            }catch(Exception e){
                  System.out.println("Error: " + e.getMessage());
            }
      }

      public MedsQB(){}
      
      public boolean shutdown(){
            return this.shutdown();
      }

      private ResultSet executeSelect(String queryString) throws SQLException, Exception{
            ResultSet rs = null;
            try{
              Statement stmt = con.createStatement();
              rs = stmt.executeQuery(queryString);
            } catch (SQLException sqle) {
              error = "SQLException: Could not execute the query. Error:" + sqle.getMessage();
              throw new SQLException(error);
            } catch (Exception e) {
              error = "An exception occured while retrieving records.";
              throw new Exception(error);                   
            }
            queryString = null;
            return rs;
      }
}
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Expert Comment

by:SuperKarateMonkey
ID: 9774239
Please show the exact syntax in the JSP.  Not all the code is required, obviously, just the part pertaining to the Bean.
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Author Comment

by:chambers777
ID: 9774240
I've figured out the problem.. I had two driver files in my classpath... removed the older one and I'm good to go!!!
LC
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Author Comment

by:chambers777
ID: 9774265
Thanks for your help anyway!
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Expert Comment

by:SuperKarateMonkey
ID: 9774327
Yup.  Glad it worked out.
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Expert Comment

by:SuperKarateMonkey
ID: 10062987
Deletion of the question is fine.  He figured it out for himself.
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ID: 10083836
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