Вызов хранимой процедуры Oracle в PHP - ORA-01008: не все переменные связаны

Я пытаюсь вызвать хранимую процедуру в Oracle, но получить следующую ошибку:

ORA-01008: не все переменные связаны

Вот мой PHP-код:

$cur = oci_new_cursor($connApp);

$sql = 'BEGIN ICT_FORMS.P_FORM1(
    :in_action,
    :in_form1_urn,
    :in_cby,
    :in_created_dt,
    :in_dept_code,
    :in_post_code,
    :in_budget_code,
    :in_reason_req,
    :in_oh_adj,
    :in_outcome_urn,
    :in_serv1,
    :in_serv2,
    :in_serv3,
    :in_serv4,
    :in_group_urn,
    :in_sup_staffno,
    :out_err,
    :out_cursor,
    :out_cursor2,
    :out_cursor3,
    :out_newurn);
    END;';

$stmt = oci_parse($connApp, $sql);

$action = 'MYA';
$staffno = '245578';
$null = null;
$zero = 0;

// bind the input parameters
oci_bind_by_name($stmt, ':in_action', $action);
oci_bind_by_name($stmt, ':in_cby', $staffno);

// bind the cursor
oci_bind_by_name($stmt,":out_cursor", $cur,-1, OCI_B_CURSOR);

// bind all of the null variables
oci_bind_by_name($stmt, ':in_form1_urn', $zero);
oci_bind_by_name($stmt, ':in_created_dt', $null);
oci_bind_by_name($stmt, ':in_dept_code', $null);
oci_bind_by_name($stmt, ':in_post_code', $null);
oci_bind_by_name($stmt, ':in_budget_code', $null);
oci_bind_by_name($stmt, ':in_reason_req', $null);
oci_bind_by_name($stmt, ':in_oh_adj', $null);
oci_bind_by_name($stmt, ':in_outcome_urn', $zero);
oci_bind_by_name($stmt, ':in_serv1', $null);
oci_bind_by_name($stmt, ':in_serv2', $null);
oci_bind_by_name($stmt, ':in_serv3', $null);
oci_bind_by_name($stmt, ':in_serv4', $null);
oci_bind_by_name($stmt, ':in_group_urn', $zero);
oci_bind_by_name($stmt, ':in_sup_staffno', $zero);

oci_bind_by_name($stmt, ':out_err', $error);
oci_bind_by_name($stmt, ':out_cursor2', $cur2, -1, OCI_B_CURSOR);
oci_bind_by_name($stmt, ':out_cursor3', $cur3, -1, OCI_B_CURSOR);
oci_bind_by_name($stmt, ':out_newurn', $newURN);

oci_execute($stmt);
oci_execute($cur);

while($row = oci_fetch_assoc($cur))
{
    var_dump($row);
}

И здесь хранимая процедура:

create or replace PROCEDURE           P_FORM1 (
    in_action       IN VARCHAR2,
    in_form1_urn        IN NUMBER DEFAULT 0,
    in_cby              IN VARCHAR2 DEFAULT NULL,
    in_created_dt       IN DATE DEFAULT NULL,
    in_dept_code        IN VARCHAR2 DEFAULT NULL,
    in_post_code        IN VARCHAR2 DEFAULT NULL,
    in_budget_code      IN VARCHAR2 DEFAULT NULL,
    in_reason_req       IN VARCHAR2 DEFAULT NULL,
    in_oh_adj           IN VARCHAR2 DEFAULT NULL,
    in_outcome_urn      IN NUMBER DEFAULT 0,
    in_serv1            IN VARCHAR2 DEFAULT 'N',
    in_serv2            IN VARCHAR2 DEFAULT 'N',
    in_serv3            IN VARCHAR2 DEFAULT 'N',
    in_serv4            IN VARCHAR2 DEFAULT 'N',

    in_group_urn        IN NUMBER DEFAULT 0,
    in_sup_staffno      IN NUMBER DEFAULT 0,

    out_err             OUT VARCHAR2,
    out_cursor          OUT SYS_REFCURSOR,
    out_cursor2             OUT SYS_REFCURSOR,
    out_cursor3         OUT SYS_REFCURSOR,
    out_newurn          OUT NUMBER
) as 

f1_new_urn NUMBER := 0;

comm_new_urn NUMBER := 0;

cursor NEW_Form1_CURSOR is
select ICT_Forms.s_form_1_seq.nextval from dual;


cursor NEW_Form1_comments_CURSOR is
select ICT_Forms.s_form_1_comments_seq.nextval from dual;


/* --------- Local Variables --------- */
sql_statement VARCHAR2(4000) :=null;

sql_statement2 VARCHAR2(4000) :=null;

sql_statement3 VARCHAR2(4000) :=null;



-- View Attributes [inc foreign key descriptions]
        view1_name VARCHAR2(4000) := ' ICT_Forms.v_Form_list T1 ';

    view1_cols VARCHAR2(4000) := ' urn, date_created, Form_name, outcome, cby ' ;

        view2_name VARCHAR2(4000) := ' ICT_Forms.v_Form1_auth_list T1 ';

    view2_cols VARCHAR2(4000) := ' urn, date_created, created_by, form_name, outcome, supervisor_name, sup_staffno ' ;

    view3_name VARCHAR2(4000) := ' ICT_Forms.v_form1';

    view3_cols VARCHAR2(4000) := ' urn, Date_created, form_name ,department_lpa, Department_name, Description, budget_code, Reason_req, Oh_adj, outcome' ;

    view4_name VARCHAR2(4000) := ' ICT_Forms.v_form1_serv';

    view4_cols VARCHAR2(4000) := ' service_type, service_desc, cost' ;

    view5_name VARCHAR2(4000) := ' ICT_Forms.v_form1_comments';

    view5_cols VARCHAR2(4000) := ' Comments_by ,comments_date, auth_type, Comments, Group_name' ;


/* --------- Main Processing Block --------- */

BEGIN

out_err := '0';

-- ******************************************************************************************************************   
IF in_action = 'MYA' then  -- Select List of Form1 by staff_no

sql_statement := 'SELECT' ||  view1_cols || ' FROM ' ||  view1_name ||
                  'WHERE Cby =:in_cby';

        OPEN out_cursor FOR sql_statement using in_cby;

--
******************************************************************************************************************  


ELSE

    out_err := '[P_FORM1] Action not valid: ' || in_action;

END IF;

-- ******************************************************************************************************************   


EXCEPTION

  WHEN OTHERS THEN
    out_err := '[P_FORM1] An error has occurred - '||SQLCODE||' - ERROR - '||SQLERRM || chr(10) ||
                   'SQL Statement: ' || sql_statement ;


END;

Любые идеи, что я могу делать неправильно, пожалуйста? Я проверил, что все 21 параметр в PHP соответствует 21 параметрам в процедуре, и они делают, и все они кажутся связанными правильно.

Большое спасибо