Dont know what model-year your DL650 is, but in the case of rear bearings it doesnt matter, because they´re the same from K4 thru K9. (This is for the E19 or Euro-type, but I believe in this case it should apply to most model versions...)
There should be 2 pcs of bearing 08123-62047 (Suzuki part number), and this bearing´s dimensions are 20x47x14.
And on the rear axle, sprocket side, there is also 1 bearing: 09262-32007, dimensions 32x65x17.
Did not look to me like there would be a lot of parts for big bikes available in Indonesia. And these may very well be model-specific items, too. But there are a lot of vehicles in that country, that need repairing from time to time, so maybe if you get real lucky, it could be possible to find the bearings by dimensions.
As you´ve probably noticed, all over Asia they are very good in fixing things to get them back moving again, but do note that they probably dont care, if your wheel hub will suffer some damage later on, if the rebuilt bearing comes apart again, for example. I would not advice to put a spacer or some other temporary solution there instead of a bearing, either. Possibility of larger damage in a short time.
The closest place to order any genuine parts would probably be from Singapore. Last year I got some work-related stuff sent to me on an envelope by DHL from Europe to Malaysia, and it only took some 3-4 days. So I´d figure it shouldnt take very long from Singapore, but could be expensive.
The dust seals to the rear axle, if you need them as well, should be: 09285-28001 (right) and 09285-39001 (left = sprocket side).
Hope this is of any help & good luck on your journey! Pekka