OutOfMemoryError: Failed to allocate a 3686412 byte allocation with 482112 free bytes and 470KB until OOM?

i want to make images backup because of this i use sqlite DataBase for storing images my code is worked fine when i put 10 to 12 images but after that it shows OutOfMemoryError . i use android:largeHeap="true" it increase some amount of memory but this is not sufficient for my work.how can i solve this??please help me guys.

this is my code:

 if(data==null){
                   Uri uri = data.getData();


                  try {

                      InputStream inputStream = getContentResolver().openInputStream(uri);
                      BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
                      Bitmap bmp = BitmapFactory.decodeStream(bufferedInputStream);

                      ByteArrayOutputStream bos = new ByteArrayOutputStream();
                      bmp.compress(Bitmap.CompressFormat.PNG, 100, bos);
                      byte[] bArray = bos.toByteArray();

                      DataBase dataBase=new DataBase(getBaseContext());
                      dataBase.insertImage(bArray);
                      Toast.makeText(getBaseContext(),"single item  ",Toast.LENGTH_LONG).show();
                  } catch (FileNotFoundException e) {
                      e.printStackTrace();
                  }