1. I have cleared the cache and tried. This settings are working for low memory table ( like 2 GB to 10 GB). however, this is not working for my case(25 GB table size).
2. I tried reducing the value to max_chunk_size_for_insert') = 10000 . But, still the same issue.
3. I facing the same issue for other tables as well.
4. I am not sure how to modify the query.
5. According to my understanding this is something that HANA product should do this small task.
6. Customer cannot spend this much of time to copy a single table. I am disappointed by this 
7. Also, I believe the above settings should be maintained by default.