PRINT debug messages and CURSOR in stored procedure confuses DTS; "Invalid Pointer"

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  • Bill_DBA

    PRINT debug messages and CURSOR in stored procedure confuses DTS; "Invalid Pointer"

    I have the following stored procedure that is called from the source of
    a transformation in a DTS package. The first parameter turns on PRINT
    debug messages. The second, when equals 1, turns on the openning,
    fetching, and closing of a cursor. Things are fine if only one of the
    two parameters was set to 1.

    When run with both parameters turned on, "dba_test_d ts 1, 1", DTS
    source (tab) preview fails because it thinks no row was returned. "No
    rowset was returned from the SQL statement". Understanbly then the
    transformation step would also fail with the "Invalid Pointer" error.

    As you'd see, I have SET NOCOUNT ON in the code. Has anyone
    experienced this? Is this a known bug? This occurs in SQL Server 2000
    running on Windows Server 2003.
    -----------------------------------------------------------------------------------------------------------------
    CREATE PROC dba_test_dts ( @debug BIT = NULL, @cur BIT = NULL )

    AS

    -- Always have these 2 options set or unset so DTS would not error out
    -- with the Invalid Pointers message.

    SET NOCOUNT ON

    SET ANSI_WARNINGS OFF

    DECLARE @FMT_FILE_NAME VARCHAR(256)
    DECLARE @OUTPUT_FILE_NA ME VARCHAR(256)

    DECLARE @emp_id INT
    DECLARE @lastname VARCHAR(70)

    IF ( @debug = 1 )
    BEGIN
    PRINT '=== BEGIN ==='
    PRINT 'Stored Procedure dts_calling_sto red_proc'
    PRINT 'Begin timestamp: ' + CONVERT(VARCHAR (32), CURRENT_TIMESTA MP,
    109 )
    PRINT 'Server : ' + @@SERVERNAME
    PRINT 'Host Name/ID : ' + HOST_NAME() + '/' + CONVERT(VARCHAR (32),
    HOST_ID())
    PRINT 'Database : ' + DB_NAME()
    PRINT 'User/NT User : ''' + USER_NAME() + '''/''' + SYSTEM_USER +
    ''''
    PRINT 'DEBUG FLAG : ' + CONVERT( CHAR(1), @DEBUG )
    PRINT '=== BEGIN ==='
    PRINT SPACE(1)
    END

    IF ( EXISTS ( SELECT 1 FROM sysobjects WHERE
    id=object_id(N' Employees_temp' ) ) )
    DROP TABLE Employees_temp

    CREATE TABLE Employees_temp
    (
    emp_id INTEGER
    , lastname VARCHAR(70)
    )

    INSERT INTO Employees_temp
    (
    [emp_id]
    ,[lastname]
    )
    SELECT EmployeeID
    , lastname
    FROM Employees

    IF ( @cur = 1 )
    BEGIN

    DECLARE curEmp CURSOR FOR
    SELECT emp_id
    , lastname
    FROM Employees_temp

    OPEN curEmp

    FETCH NEXT FROM curEmp
    INTO
    @emp_id, @lastname

    WHILE ( @@FETCH_STATUS = 0 )
    BEGIN
    FETCH NEXT FROM curEmp
    INTO
    @emp_id, @lastname
    END

    CLOSE curEmp
    DEALLOCATE curEmp

    END

    SELECT emp_id
    , lastname
    FROM Employees_temp

    GO

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