Regrd the data packet size

Question

Hi
i have two questions
1) where can i set the data packet size in BW and R3 and also in BI how and where can we set .
2)by what method/logic we will select the key fields in dso.
ex: i have 5 tables in the sourse and each table will have primary keys, now how do we know that particular primary keys should be kept in KEY FIELDS folder in DSO.
full points will be assigned.

Answer 1

HI,
Data package settings for the data to be extracted from R3 to BI can be done through :
1) SBIW>General Settings> Maintain Control Parameters for Data Transfer
    These settings are common for all the info packages which extract data from R3.
2) If u want to do settings relevent to specific Infopackage then :
RSA1>Click On the Specific Infopackage>Scheduler(in the Menu Bar)-->DataS Default Data Transfer.
3) And if you want to do DSO Package settings then:
Got to Transaction RSODSO_SETTINGS 
Here u can do package settings for DSO activation ,paramenter for SID generation ect.
And selection of Key fileds depends upon the requirement.
Based on the key fields what all the data fileds u want to overwrite or add the corespomding data fields
Regards,
Chaitanya.