Hi Ramakrishna
We also face similar issue unable to export the data to excel. The same reply we got from SAP that restart APS server. But it did not work for us. We again reply back to SAP. We are waiting for solution.
For quick work around we install Oracle SQL developer tool from that tool i connected to the failed database and can see the data and exported the data to excel. This solution for temporary.
Regards
Vijay Mukunthan