Assume that you have installed Cumulative Update 7 (CU7) or CU8 for Microsoft SQL Server 2012 Service Pack 1(SP1). When you try to create new report subscriptions in the portal for a report, you receive the following errors:
Microsoft.ReportingServices.Diagnostics.Utilities.ReportServerStorageException: An error occurred within the report server database. This may be due to a connection failure, timeout or low disk condition within the database. Only members of sysadmin role are allowed to update or delete jobs owned by a different login.