JDBC Passing ResultSet to a Stored Procedure in Oracle through Java

Question

I have following Stored Procedure written in Oracle.
create or replace package types
as
     TYPE NumCurType IS REF CURSOR;
     FUNCTION add_numbers(c2 IN NumCurType)
     RETURN NUMBER;
END;
CREATE OR REPLACE PACKAGE BODY types
as
     FUNCTION add_numbers(c2 IN NumCurType)
     RETURN NUMBER
     IS
     v_sum number :=0;
     num_record num%rowtype;
     begin
     loop
     fetch c2 into num_record;
     v_sum:= v_sum + num_record.id ;
     dbms_output.put_line(v_sum);
     exit when c2%NOTFOUND;
     end loop;
     close c2;     
     return v_sum;
     end add_numbers;
begin
dbms_output.put_line('test');
end;
And the following java class to call the stored procedure.
import java.io.*;
import java.sql.*;
class test
     public static void main(String arg[]) throws Exception
          Class.forName("oracle.jdbc.driver.OracleDriver");
          Connection conn = DriverManager.getConnection ("jdbc:oracle:thin:@localhost:1521:oracle","scott","tiger");
          Statement stmt = conn.createStatement();
          String sql = "select id from num";
          ResultSet rs = stmt.executeQuery(sql);
          System.out.println(rs);
          if(rs != null)
               rs.next();
          CallableStatement cstmt = conn.prepareCall("{ ? = call types.add_numbers(?) }");
          cstmt.registerOutParameter(1,java.sql.Types.DOUBLE);     
     cstmt.setObject(2,rs,OracleTypes.CURSOR);                    
          cstmt.executeUpdate();
          System.out.println(cstmt.getObject(1));
          System.out.println("Procedure Exceuted");
When I run the class I get following error
java.sql.SQLException end of TNSData channel
Can anybody help me in locating the error?

Answer 1

Hi Jain,
As far as I know, what you are attempting to do cannot be done. If I remember correctly, this question has been previously discussed on Oracle's "Technet" forums:
http://technet.oracle.com
There is no capability in the Oracle JDBC driver for translating a "ResultSet" to a REF CURSOR.
You may also be able to find more details at the following Web sites:
http://asktom.oracle.com
http://metalink.oracle.com
Good Luck,
Avi.