Symptoms
Assume that you render a report in Microsoft SQL Server 2012 Reporting Services (SSRS 2012) or SSRS 2014, and that the report has some small errors, for example:
library!ReportServer_0-8!4798!12/16/2014-16:33:01:: i INFO: RenderForNewSession('/MyReport')processing!ReportServer_0-8!4798!12/16/2014-16:33:03:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: , Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 8.;processing!ReportServer_0-8!4798!12/16/2014-16:33:33:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: , Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 9.;
In this situation, the report runs successfully. However, it might take longer time than usual to render the report. Each error may cause a 30-second delay.
Cause
This issue occurs because Reporting Services is blocked from loading the unnecessary error-handling object.
Resolution
This issue was first fixed in the following cumulative update of SQL Server.
Cumulative Update 1 for SQL Server 2014 SP1 /en-us/help/3067839
Cumulative Update 5 for SQL Server 2012 SP2 /en-us/help/3037255
Cumulative Update 6 for SQL Server 2014 /en-us/help/3031047
Cumulative Update 14 for SQL Server 2012 SP1 /en-us/help/3023636
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
