http://kjellsj.blogspot.com/2011/02/help-content-cannot-be-displayed-in.html
Solution:
After a iisreset this doesnt work anymore.
A solutions: locate the WSS_Content_Application_Pools role in the admin db database roles.
In the properties go to securables and search (add) the stored procedures proc_EnumResourcesAtScope and proc_EnumResourceValuesForAllLangs. Grant them execute permissions.
[Alert] : SharePoint: Insufficient Permission To Connect To The SQL Database
[Alert Description] : A critical incident has occurred where services are not able to login to the database on server
Event ID: 5214
Event Description: Insufficient SQL database permissions for user 'Name: DOMAIN\Account SID: S-1-5-21-830005768-197582238-3774774025-5022 ImpersonationLevel: Impersonation' in database 'AdminContentDB' on SQL Server instance 'SQL Server'. Additional error information from SQL Server is included below.
The EXECUTE permission was denied on the object 'proc_EnumResourcesAtScope', database 'AdminContentDB', schema 'dbo'.
Solution:
After a iisreset this doesnt work anymore.
A solutions: locate the WSS_Content_Application_Pools role in the admin db database roles.
In the properties go to securables and search (add) the stored procedures proc_EnumResourcesAtScope and proc_EnumResourceValuesForAllLangs. Grant them execute permissions.