php pdo 连接到 DB2 不同的 CODEPAGE

I'm connecting to DB2 DB

$sql = 'CALL procedures.name(1,1,'text',1,1,'2017-08-30','2017-08-31',?,?)';
    try {
        $con = new PDO("idb:all_the_connections_stuu",'user','pass',
           [
              PDO::ATTR_PERSISTENT => FALSE,
              PDO::ATTR_ERRMODE => PDO:ERRMODE_EXCEPTION,
              PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL,
              PDO::ATTR_AUTOCOMMIT => 0
           ]
        );
        $stmt = $con->prepare($sql);
        $stmt->bindParam(1, $errorNumber, PDO::PARAM_INT);    //also trying without PDO::params  
        $stmt->bindParam(2, $errorCode, PDO::PARAM_STR, 800); //and with |PDO::PARAM_INPUT_OUTPUT
        $stmt->execute();        //return *TRUE*
        var_dump($errorNumber);  //return NULL
        var_dump($errorCode);    //return NULL
        var_dump($stmt->fetchAll(PDO::FETCH_ASSOC)); //returns Error
        $stmt->closeCursor();
        $stmt = null;
    } catch (PDOException $e) {
        echo ($e->getMessage());
    }

得到了这个错误:

Fatal error:  Uncaught PDOException: SQLSTATE[57017]: <<Unknown error>>: -332 
[IBM][CLI Driver][DB2] SQL0332N  
Character conversion from the source code page "" to the target code page "" is not supported.  
SQLSTATE=57017
     (SQLFetchScroll[-332] at /home/user/shared/PDO_IBM-1.3.4/ibm_statement.c:1306) in /var/www/html/server/testsIBM/index.php:80
    Stack trace:
    #0 /var/www/html/server/testsIBM/index.php(80): PDOStatement->fetchAll(7, 0)
    #1 {main}
      thrown in /var/www/html/server/testsIBM/index.php on line 80

如果我用 db2_connect 连接

$con = db2_connect("DATABASE=DB2D;HOSTNAME=10.243.13.65;PORT=5000;PROTOCOL=TCPIP;USERNAME=asdf23;PASSWORD=asdfasf1","", "")

 ["APPL_CODEPAGE"]=>
  int(819)
  ["CONN_CODEPAGE"]=>
  int(819)

export DB2CODEPAGE=1208