SharePoint 2010: An exception of type Microsoft.SharePoint.Administration.SPUpdatedConcurrencyException was thrown

Problem

You restored a content database to your 2010 farm, and then attempted to run psconfig to configure the database.  The attempt fails with the following error:

An exception of type Microsoft.SharePoint.Administration.SPUpdatedConcurrencyException was thrown.  Additional exception information: An update conflict has occurred, and you must re-try this action.  The object...

You check the trace log and see the same message.

Solution

• First, verify that the SharePoint 2010 Timer service is started.  If it's stopped, this is likely the issue.  If it's not, try the next series of steps.
• Perform the following steps:
1. Open an elevated command prompt, and then execute stsadm -o setproperty -pn command-line-upgrade-running -pv No, followed by an iisreset
   
2. Next, restart the SharePoint 2010 Timer service.

References

• SPUpdatedConcurrencyException While Installing SharePoint 2010 Service Pack 1

Notes

• Upgrades will not succeed if the timer service is stopped.