my $sqlquery = "SELECT Date_, Graphic_Image from GRAPHIC_VIEW ...";

$dbHandle->{syb_binary_images} = 1; #return image as binary not hex
my $sth = $dbHandle->prepare($sqlquery);
$sth->{syb_no_bind_blob} = 1;
$sth->execute;
my $row;
my $len;
while(1){
 # segementation fault in next statement
 $len = $sth->func(2,$imgchunk,2048,'ct_get_data');
 last if $len != 2048;
}