select ข้อมูลแล้วไม่ขึ้นอะไรเลยครับช่วยหน่อยครับ php+oracle

<?
$conn = oci_connect('tplus', 'tplus', '135.9.200.1/ths');
if (!$conn) {
    $e = oci_error();
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$strSQL = "select * from gb_location";
$result = oci_parse( $conn,$strSQL);
$num = oci_execute( $result);
If ($num>0)
{
$RecNo=1;
while ( $rs = oci_fetch_array( $result ,OCI_ASSOC+OCI_RETURN_NULLS) )
{
if ($RecNo%2==1)
{

echo "<TABLE>";
echo"<TR bgcolor=\"#CC9900\" >";
echo"<TD><font color=\"#FFFFFF\"><CENTER>รหัสคลัง</CENTER></font></TD>";
echo"<TD><font color=\"#FFFFFF\"><CENTER>ชื่อคลัง</CENTER></font></TD>";
echo"<TD><font color=\"#FFFFFF\"><CENTER>ปรับปรุงข้อมูลโดย</CENTER></font></TD>";
echo"<TD><font color=\"#FFFFFF\"><CENTER>บันทึกข้อมูลโดย</CENTER></font></TD>";
echo"</TR>";

echo "<TR bgcolor=\"#99CC66\">";

echo "<TD bgcolor=\"#66FF99\"><font color=\"#FFFFFF\">$rs[loc_id]</font>";
echo "</TD>";

echo "<TD bgcolor=\"#66FF99\"><font color=\"#FFFFFF\">$rs[loc_name]</font>";
echo "</TD>";

echo "<TD bgcolor=\"#66FF99\"><font color=\"#FFFFFF\">$rs[upd_by]</font>";
echo "</TD>";

echo "<TD bgcolor=\"#66FF99\"><font color=\"#FFFFFF\">$rs[cr_by]</font>";
echo "</TD>";




echo "</TR>";
echo "</TABLE>\n";
echo "</TD>\n<BR>";
        $RecNo++;
}
echo "</tr>\n";
?>
<?
}
}

?>