Hi Vijay,
1st, you have two separate agent instances, one for simulation and one for query. Please make the changes I requested for the query instance, and start it only -- do NOT start the simulation instance. Then see if you can read the tags. You do not need a notification active to enable tag queries from MII with PCo.
2nd, Please note that Query Port settings for each agent instance require unique Port number for each enabled query type per agent. I think you are leaving them set to the default value of 9000; that is causing the OPC Agent to fail to read the tags and also generates the duplicate port error messages in the logs.
Regards, Steve