Upgrade from 2005 and 2008 R2 to 2012 SP2

Question

My project is getting ready to upgrade from SQL Server versions 2005 and 2008 R2 to SQL Server 2012.
Is there any known issues that we should look out for?
For SQL Server 2005, we are only running the Database Engine, Full text search and SQL Server Agent. 
For SQL Server 2008 R2 we are running Database Engine, Full Text Search, SQL Server Agent, Analysis Services, Reporting Services, and Integration Services.
DJ

Answer 1

Hello,
A new full-text search service was introduced on SQL Server 2008, so about upgrading full-text search from SQL Server 2005 to SQL Server
2012, please read the following article:
http://msdn.microsoft.com/en-us/library/ms142490(v=sql.110).aspx
On the post-installation tasks, please repopulate the full-text catalogs.
To what edition of SQL Server 2012 you are upgrading? Do you know about the core-based Enterprise licensing
Have you run Upgrade Advisor? Please read the following technical article too:
http://download.microsoft.com/download/9/5/3/9533501A-6F3E-4D03-A6A3-359AF6A79877/SQL_Server_2012_Upgrade_Technical_Reference_Guide_White_Paper.pdf
About Analysis Services, please read the following:
http://technet.microsoft.com/en-us/library/ms143742(v=sql.110).aspx
http://technet.microsoft.com/en-us/library/ms143229(v=sql.110).aspx
http://technet.microsoft.com/en-us/library/ms143682(v=sql.110).aspx
Hope this helps.
Regards,
Alberto Morillo
SQLCoffee.com