Rfc call recieve error: sap system failure while calling DS remote function.

Hi Experts,

I am getting the following error (Rfc call recieve error: sap system failure while calling DS remote function. )

while executing job which contains an abap data flow in my project. i have more than 2 lakh records to load and it is loading 5000 records in to the target and terminating the job by showing the above mentioned error. i am using DS 4.2 version and abap data flow inside a normal data flow. Kindly suggest me some solution for the same.

Thanks in Advance.

subbu.