Hi, I've just gone through a long and complicated Sharepoint Upgrade from 2010 to 2013 (long story). It wasn't all Sharepoints fault, there where multiple third party interfacing software packages. The last tricky piece of the puzzle is SSRS (Sharepoint Integrated Mode).
I've installed SSRS 2012 on the new sharepoint server and configured it in sharepoint. I have three new databases in the sql server (it's sql server 2008, this isn't pertinent to the issue, that I'm aware of). I believe this is configured correctly - I've downloaded report builder and I'm able to connect to the sites). Just as fyi, there wasn't an in-place 2008 SSRS on the machine to upgrade, via the Sql Server Installer. It was a case of new hardware etc.
Now I have two databases from my old SSRS 2008 (sharepoint 2010 integrated mode) that I want to upgrade and use. These contain I assume the reports the upgraded sharepoint environment want to access (it is of course a new farm, but with upgraded content databases etc). My question is how do I upgrade and use my old SSRS databases in the new SSRS 2012 / Sharepoint 2013 environment? Many thanks for any ideas, Thanks Dan.