Hello Colm,
Thank you for your suggestion.
I checked in my system and unfortunately could not find anything feasible.
Me and my team as now designing the ETL informatica but have to go in sequential data load only as Informatica do not provide parallelism yet.
I actually asked the question in this forum because my source system is ECC and we are extracting data in informatica using the BCI in ecc. And eventually I will be working with similar strategy in SAP BW too. Luckily we have a lot more flexibility there 
Thanks Again.
Thanks
Amit