Vijay Babu,
Do these servers have SDM up and running?
BLR_SDM_BCKGRND
BLR_SDM_STANDBY
Was SDM upgraded successfully on both the above?
Are you able to login to the SDM UI on the current BG server successfully?
The reason behind the above questions is this error on your APP. It's not starting because its not getting response from BG.
02/10 18:18:34.91 BLR_SDM_APP pdm_d_mgr 3608 SIGNIFICANT ServerStatusMonitor. 1569 Waited 12355 seconds for the RF Broker to respond to server list request
Thx
_R