byte[] bData=null;
        bData = c.getBlob(0); // Reading the BLOB from DB is very fast. I see the data in bData during debugging
        ByteArrayInputStream bos = new ByteArrayInputStream(bData);
        ObjectInputStream ois;
        try {
            ois = new ObjectInputStream(bos);
            o=ois.readObject(); // this operation costs most

        } catch (IOException e) {
            e.printStackTrace();
        }