I'm attempting to do a migration + upgrade of our RS databases
Currently they are in SQL 2005 and running with Sharepoint 2010
We have built new servers for 2012
1. SQL 2012 DB Server
2. RS 2012 App Server
I backed up existing RS databases from 2005 (Report Server DB and Temp DB) and restored them to 2012
Installed the 2012 RS Add-in and installed the RS service, shows up in Central Admin -> Manage Services on Server
When creating a new Service Application for Reporting Services I assumed I can simply point it to use the database I restored, but I receive an error and when checking the logs it says it fails when trying to alter a 'Alerting' database
I see this is a new 3rd database being used for 2012, but in 2005 or 2008 R2 there is no 3rd database... so where do I get it?
What is the proper way to migrate + upgrade my databases to 2012? I have found next to nothing after searching for hours!