We have been told that a good process for accelerating the process of upgrading a farm (say installing a Service Pack) is:
- Detach all content databases.
- Install the Service Pack or Cumulative update.
- Run PSconfig or Wizard.
- Mount again the content databases with Mount-SPContentDatabase.
According to the Mount-SPContentDatabase documentation, this cmdlet upgrades automatically the content database if it detects that there is a mismatch with the version of the farm. We have followed the process for upgrading a farm from SP2010 RTM to SP2010 SP2+CU Aug 2013, but after running Mount-SPContentDatabase, all databases appear in status "Database is in compatibility range and upgrade is recommended"
Only after running an Upgrade-SPContentDatabase they appear as "No action required"
Did we miss something? Thanks in advance.