Hi Barla,
please see the following consulting notes...
892513 - Consulting: Performance: Loading data, no of pkg,req siz.
409641 - Examples of packet size dependency on ROIDOCPRMS
Please keep you datapacket lower than 50k and reduce the dataload by using selections. You should not try to load more than 10million records per request, and you should not have more than 1000 data packets, so you will have to calculate the loads selections accordingly.
Please also see the following notes/ links related to Semantic grouping...
1626647 - Consulting:Processing mode of DTP loading DSO
http://help.sap.com/saphelp_nw70/helpdata/en/48/0371981fc43c99e10000000a42189c/content.htm
I hope these help. Best Regards,
Colm