Hi Thiyagarajan.
A few things to check/confirm up front (apologies is you have done all this, but I do not want to assume..!) :
- is Prognosis using the CUC Admin account credentials to access CUC, or did you create a specific account for Prognosis?
- two services NEED to be runing on CUC:
1) SNMP Master Agent servie (activated on all servers in cluster)
2) SOAP - Performance Monitoring APIs service (Activate on all servers in the cluster)
- have the SNMP (V1/V2c or V3) credentials been checked/set correctly, i.e. agree with those then set when adding the CUC cluster to the Monitopring server in Prognosis Admin (though I note your comment that the SNMP walk is ok, so this is unlikely to be the problem)
I would suggest that, if you created a specific account for prognosis, you try setting Prognosis up to use the Admin Account, temprorarily, to see if that resolves the issue with the SOAP/API access or not.
BR,
ms.