Hi Ganesh,
Kindly check the below threads.
RAC Member Kill Escalation - Robert Bialek - Blogs - triBLOG
Sfaturi Oracle / Tips and tricks OracleDBA: top issues for node eviction in Oracle RAC
11g R2 RAC : NODE EVICTION DUE TO MEMBER KILL ESCALATION - ORACLE IN ACTION
With Regards
Ashutosh Chaturvedi