Hi Govinda,
it's worth to look into the JCo traces as well. You might also increase the trace level in order to get more detailed picture about the communication between the RFC adapter and backend system.
Note: 628962 - How to switch on the SAP JCo trace
Also ensure that the correct codepage is used and the data what you are reading fits to this codepage:
Note: 1849382 - Codepage mismatch between the PI RFC channel and the registered RFC server program
Best Regards,
Viktor
