There is a typo in the site database after you upgrade your environment to release 7.11 of XenDesktop. The issue is discussed on http://discussions.citrix.com/topic/381495-director-dashboard-doesent-update-after-installation-of-711/ and was initially identified by Sacha Thomet.
You can test if you have this issue by executing the Get-MonitorConfiguration commandlet. To fix the issue you have to run the following SQL update scripts against your site database:
if exists (select * from [Monitor].[Configuration] where Name = 'EnableMinLevelGranulairtyProcessUtilization') begin update [Monitor].[Configuration] set Name = 'EnableMinLevelGranularityProcessUtilization', ModifiedDate = GETDATE() where Name = 'EnableMinLevelGranulairtyProcessUtilization' end go
if exists (select * from [Monitor].[Configuration] where Name = 'EnableHourLevelGranulairtyProcessUtilization') begin update [Monitor].[Configuration] set Name = 'EnableHourLevelGranularityProcessUtilization', ModifiedDate = GETDATE() where Name = 'EnableHourLevelGranulairtyProcessUtilization' end go
if exists (select * from [Monitor].[Configuration] where Name = 'EnableDayLevelGranulairtyProcessUtilization') begin update [Monitor].[Configuration] set Name = 'EnableDayLevelGranularityProcessUtilization', ModifiedDate = GETDATE() where Name = 'EnableDayLevelGranulairtyProcessUtilization' end go
After having corrected the typo the commandlet Get-MonitorConfiguration will execute again with no errors.