Hi,
Thanks for the response.
Note 903904 does not apply in my case, As I had started SAP after SWITCHOVER & had also checked the DR DB status which was OPEN.
Note 655240 answers the question of my issue but I have checked Net8 configuration correctly which is fine as per the guide which I have used, that is why I was allowed to do SWITCHOVER otherwise there could be issue with that too and data guard config would also not be working properly (All the hostnames are maintained correctly, tnsping works, nslookup works).
In the guide there is one more parameter to connect application servers (other than CI)
rdisp/msname = <Host name of disaster CI>
I gave that parameter as well in the instance profile & restarted SAP system though its not require in my case as I have only ONE application server. But that even didn't worked out.
Kindly let me know if you any other suggestion as well.
Thanks,
Kiraang.