I upgraded a SharePoint-integrated SQL 2008 R2 SSRS server to SQL 2012 SSRS over the weekend. The installer said that the installation succeeded, but it appears that the SSRS database upgrade* may have only partially succeeded. When I attempted to access SSRS's settings after the upgrade, I received messages stating that "the report server database is an invalid version" and "The version of the report server database is either in a format that is not valid, or it cannot be read. The found version is '147'. The expected version is '162'."
From research I did over the weekend, my understanding is that the database upgrade happens automatically when SSRS comes online. Is there a way to force it to retry the database upgrade without restoring? If not, if I just restore the SQL2008R2 databases to the server, will it redo the upgrade automatically?
(*NOTE: The database upgrade I'm referring to is the SSRS Report Server database, not the database engine. The SSRS database is located on a separate server; SQL's database engine is not installed on the SharePoint server.)