Whats wrong in this code using ODBC interface of T10 in C ?

Hi!
I am trying to connect TimesTen using ODBC in a C application, I am trying to use the dynamic binding of parameters the query. The problem is elaborated in the code. In the comments.
#include <windows.h>
#include <sql.h>
#include <sqlext.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
SQLRETURN rc = SQL_SUCCESS;
/* General return code for the API */
SQLHENV hEnv = SQL_NULL_HENV;
/* Environment handle */
SQLHDBC hDbc = SQL_NULL_HDBC;
/* Connection handle */
SQLHSTMT hStmt = SQL_NULL_HSTMT;
/* Statement handle */
SQLCHAR ConnOut[255];
/* Buffer for completed connection string */
SQLSMALLINT connOutLen;
/* number of bytes returned in ConnOut */
SQLCHAR ConnString = (SQLCHAR ) "DSN=testTT;PWD=spideradm;";
/* Connection attributes */
rc = SQLAllocEnv(&hEnv);
if (rc != SQL_SUCCESS) {
fprintf(stderr,"Unable to allocate an environment handle\n");
exit(1);
SQLINTEGER param1 = 0;
SQLINTEGER paramstatus = 0;
rc = SQLAllocConnect(hEnv, &hDbc);
rc = SQLDriverConnect(hDbc, NULL,ConnString, SQL_NTS,ConnOut, 255,&connOutLen,SQL_DRIVER_NOPROMPT);
hStmt = SQL_NULL_HSTMT;
rc = SQLAllocStmt(hDbc, &hStmt);
rc = SQLPrepare(hStmt,(SQLCHAR*) "select * from test where recno = ? ",SQL_NTS);
rc = SQLBindParameter(hStmt,1,SQL_PARAM_INPUT,SQL_C_SHORT,SQL_INTEGER,0,0,¶m1,0,¶mstatus);
param1= 1;
rc = SQLExecute(hStmt); // here it goes very perfect
param1 = 2;
rc = SQLExecute(hStmt); // here is the problem it returns -1
}

There are (at least) 3 problems with this code:
1. The error checking after each ODBC call is far too simplistic. Whenever an ODBC call returns something other than SQL_SUCCESS then you need to call the SQLError() function (multiple times in a loop until it returns SQL_NO_DATA) to retrieve the error or warning information which you should then report. If you do that then the error information would give you a clue to the problem.
2. The parameter variable 'param1' is declared as a SQLINTEGER (32-bit integer) but you bind it in the SQLBindParameter() call as a SQL_C_SHORT. This is incorrect and will likely cause problems. It should be bound as a SQL_C_SLONG.
3. When you execute a statement that retrieves data (such as the SELECT statement in your example) a cursor is created. The cursor remains open until (a) you explicitly close it with SQLFreeStmt(hStmt, SQL_CLOSE), or (b) you do a commit or rollback (which closes all open cursors on the connection).
Your problem here is that the first SQLExecute opens a cursor for hStmt but you then do not fetch any data or close the cursor. When you try the second execute you get an error as there is already an open cursor for that statement. If you had used SQLError(0 to retrieve and report the error codes and messages you would see that you had incurred either an 'INVALID CURSOR STATE' or 'FUNCTION SEQUENCE ERROR' error.
The fix is to insert the call:
SQLFreeStmt(hStmt,SQL_CLOSE);
after the each SQLExecute(0 call. Of course, in a real application there would also be a SQLFetch() loop first to retrieve and process the results of the query.
Chris

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    Hi Experts,
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        METHODS add_data IMPORTING i_data TYPE i.
        METHODS get_data EXPORTING e_data TYPE char20.
      PRIVATE SECTION.
        DATA attribute TYPE char01.
    ENDCLASS.
          CLASS main IMPLEMENTATION
    CLASS main IMPLEMENTATION.
      METHOD add_data.
        ADD i_data TO attribute.
      ENDMETHOD.
      METHOD get_data.
        CONCATENATE 'Attribute value' attribute
                                   INTO e_data SEPARATED BY space.
      ENDMETHOD.
    ENDCLASS.
    DATA: object_reference TYPE REF TO main.
    end-of-selection.
      CREATE OBJECT object_reference.
      DATA:
      var TYPE char20.
      CALL METHOD object_reference->add_data( i_data = 3 ).
    var = object_reference->get_data( ).  --> errored here
      WRITE var.

    Hi Dan, if you want to use a RETURNING parameter when you call you method, you need to define the parameter as a RETURNING parameter in your class definition.
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    You had defined it as an EXPORTING parameter, which means that when you call the method you would have need to use this syntax instead.
       object_reference->get_data( IMPORTING e_data = var ).
    Regards,
    Rich Heilman

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    import java.io.IOException;
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    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
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    import java.util.*;
    * @version      1.0
    * @author
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    /*********end of servlet**********/
    /****DealerAddAck.jsp****/
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      </table>
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      </table>
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    </body>
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    Nikesh

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    Thanks guys.

    Got it.
    Thanks!

  • I can't figure out what's wrong with this code

    First i want this program to allow me to enter a number with the EasyReader class and depending on the number entered it will show that specific line of this peom:
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    Three four shut the door
    Five six pick up sticks
    Seven eight lay them straight
    Nine ten this is the end.
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    public class PoemSeventeen
    public static void main(String[] args)
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    System.out.println("Enter a number for the poem (0 to quit): ");
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    if (n = 1) || (n = 2)
    System.out.println("One, two, buckle your shoe");
    else if (n = 3) || (n = 4)
    System.out.println("Three, four, shut the door");
    else if (n = 5) || (n = 6)
    System.out.println("Five, six, pick up sticks");
    else if (n = 7) || (n = 8)
    System.out.println("Seven, eight, lay them straight");
    else if (n = 9) || (n = 10)
    System.out.println("Nine, ten, this is the end");
    else if (n = 0)
    System.out.println("You may exit now");
    else
    System.out.println("Put in a number between 0 and 10");
    I messed around with a few other thing because i had some weird errors before but now i have narrowed it down to just this 1 error.
    The EasyReader class code:
    // package com.skylit.io;
    import java.io.*;
    * @author Gary Litvin
    * @version 1.2, 5/30/02
    * Written as part of
    * <i>Java Methods: An Introduction to Object-Oriented Programming</i>
    * (Skylight Publishing 2001, ISBN 0-9654853-7-4)
    * and
    * <i>Java Methods AB: Data Structures</i>
    * (Skylight Publishing 2003, ISBN 0-9654853-1-5)
    * EasyReader provides simple methods for reading the console and
    * for opening and reading text files. All exceptions are handled
    * inside the class and are hidden from the user.
    * <xmp>
    * Example:
    * =======
    * EasyReader console = new EasyReader();
    * System.out.print("Enter input file name: ");
    * String fileName = console.readLine();
    * EasyReader inFile = new EasyReader(fileName);
    * if (inFile.bad())
    * System.err.println("Can't open " + fileName);
    * System.exit(1);
    * String firstLine = inFile.readLine();
    * if (!inFile.eof()) // or: if (firstLine != null)
    * System.out.println("The first line is : " + firstLine);
    * System.out.print("Enter the maximum number of integers to read: ");
    * int maxCount = console.readInt();
    * int k, count = 0;
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    * k = inFile.readInt();
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    * </xmp>
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    protected String myFileName;
    protected BufferedReader myInFile;
    protected int myErrorFlags = 0;
    protected static final int OPENERROR = 0x0001;
    protected static final int CLOSEERROR = 0x0002;
    protected static final int READERROR = 0x0004;
    protected static final int EOF = 0x0100;
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    public EasyReader()
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    myErrorFlags = 0;
    myInFile = new BufferedReader(
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    * @param fileName the name or pathname of the file
    public EasyReader(String fileName)
    myFileName = fileName;
    myErrorFlags = 0;
    try
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    myErrorFlags |= OPENERROR;
    myFileName = null;
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    public void close()
    if (myFileName == null)
    return;
    try
    myInFile.close();
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    System.err.println("Error closing " + myFileName + "\n");
    myErrorFlags |= CLOSEERROR;
    * Checks the status of the file
    * @return true if en error occurred opening or reading the file,
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    public boolean bad()
    return myErrorFlags != 0;
    * Checks the EOF status of the file
    * @return true if EOF was encountered in the previous read
    * operation, false otherwise
    public boolean eof()
    return (myErrorFlags & EOF) != 0;
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    return myFileName == null || myInFile.ready();
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    * a space or a newline character).
    * @return character read or <code>null</code> character
    * (Unicode 0) if trying to read beyond the EOF
    public char readChar()
    char ch = '\u0000';
    try
    if (ready())
    ch = (char)myInFile.read();
    catch (IOException e)
    if (myFileName != null)
    System.err.println("Error reading " + myFileName + "\n");
    myErrorFlags |= READERROR;
    if (ch == '\u0000')
    myErrorFlags |= EOF;
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    * Reads from the current position in the file up to and including
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    * @return the read string (excluding the newline character) or
    * null if trying to read beyond the EOF
    public String readLine()
    String s = null;
    try
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    catch (IOException e)
    if (myFileName != null)
    System.err.println("Error reading " + myFileName + "\n");
    myErrorFlags |= READERROR;
    if (s == null)
    myErrorFlags |= EOF;
    return s;
    * Skips whitespace and reads the next word (a string of consecutive
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    * @return the read string or null if trying to read beyond the EOF
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    char ch = ' ';
    int count = 0;
    String s = null;
    try
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    ch = (char)myInFile.read();
    while (ready() && !Character.isWhitespace(ch))
    count++;
    buffer.append(ch);
    myInFile.mark(1);
    ch = (char)myInFile.read();
    if (count > 0)
    myInFile.reset();
    s = buffer.toString();
    else
    myErrorFlags |= EOF;
    catch (IOException e)
    if (myFileName != null)
    System.err.println("Error reading " + myFileName + "\n");
    myErrorFlags |= READERROR;
    return s;
    * Reads the next integer (without validating its format)
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    public int readInt()
    String s = readWord();
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    else
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    public double readDouble()
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    return Double.parseDouble(s);
    // in Java 1, use: return Double.valueOf(s).doubleValue();
    else
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    Can anybody please tell me what's wrong with this code? Thanks

    String[] message = {
        "One, two, buckle your shoe",
        "One, two, buckle your shoe",
        "Three, four, shut the door",
        "Three, four, shut the door",
        "Five, six, pick up sticks",
        "Five, six, pick up sticks",
        "Seven, eight, lay them straight",
        "Seven, eight, lay them straight",
        "Nine, ten, this is the end",
        "Nine, ten, this is the end"
    if(n>0)
        System.out.println(message[n]);
    else
        System.exit(0);

  • What is wrong in this code..please

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    orderREF="1036578"/><edm:OrderItem><edm:Order orderID="1036579"/> this type of line that also comes in same program,here also we need output as 1036578.please tell me what i will do to hanndle these

    first of all,i kindly request team please not kill
    me by giving suggestion using xml parser.......can u
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    jdom tutorials: http://www.jdom.org/downloads/docs.html
    dom4j tutorials: http://www.dom4j.org/cookbook.html

  • What the he** is wrong with this code?

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    Mark.
    PS: If you need the database-schema or anything else, let me know....
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                dataTable1Model.commit();
                dataTable1Model.execute();
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            }catch (Exception e) {
                log("Page 1: Row delete exception: ", e);
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            } // end try catch
          return null;
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    just a guess - perhaps call pkRowSet.close() at the end of your try/catch?
    v

  • What is wrong with this code? on(release) gotoAndPlay("2")'{'

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