After installing Orchestrator. The application is not launching in the browser

I have installed orchestrator successfully. But the application is not launching. when i check the event viewer logs i see the System.Reflection.TargetInvocationException. It is trying to create the master database. But actually i have created the database before installation and gave the main data base name in the parameter while installing. even after installation i check the connection string in the web config it seems it mapped to correct Database. I don’t know why it is trying to create new ‘master’ data base and what i am missing here.

Looks like DB permission Issue. Does the Application Pool user has permission granted in the Database?