DATABASE:AWSDEQNVAL0011.JNJ.COM        : STATUS: CA3S:The Data Guard status of CA3P is Error ORA-12541: TNS:no listener.
Listener was down due to schedule maintenance over the weekend w.r.t to CHG000011404856 
Now the DB is up and running fine with no issues. 
Primary database and CS are running on secondary servers also vertex and EDG logger are running fine 
Hence closing this incident