Contents
- 1 Where are the log files in SharePoint 2010?
- 2 What is diagnostic logging in SharePoint Foundation 2010?
- 3 Why do we need logging in Microsoft SharePoint?
- 4 How to write your own messages to SharePoint log files?
- 5 What’s the maximum file size you can upload to SharePoint?
- 6 How to enable event logging in SharePoint Server?
In addition to the new logging database in SharePoint 2010, developers can also analyze the raw SharePoint log files that are created in the {SharePoint Root}\\LOGS folder on each server.
The article Configure diagnostic logging (SharePoint Foundation 2010) (Microsoft TechNet) demonstrates how to configure the diagnostic logging in SharePoint 2010. Another change Microsoft introduced is a new database that contains all logging information for all servers in the farm.
This topic discusses how you, as a developer, can use the logging mechanisms provided by Microsoft SharePoint Foundation to make it easier to develop applications, provide more in-depth information for debugging, and communicate with system administrators when a problem is encountered or a threshold is reached.
How to write event logs in SharePoint Foundation?
However, in SharePoint Foundation it is recommended that you use the SPDiagnosticsServiceBase class. The SPDiagnosticsServiceBase class wraps all calls to the IDiagnosticsManager class, making it easier for developers to interact with event logs. This approach allows you to write directly to the trace service.
How often does SharePoint create a new log file?
By default, a new log file is created every 30 minutes. You can change the interval by using Windows PowerShell with the Set-SPDiagosticConfig command. The following code snippet configures SharePoint to create a new trace log every 60 minutes. Set-SPDiagnosticConfig Set-SPDiagnosticConfig -LogCutInterval 60
Reading from the SharePoint ULS logs is helpful when troubleshooting SharePoint generated messages. But one thing developers really need is the ability to write their own messages to the log files. Microsoft made it much easier to write to the log files in SharePoint 2010 by using the SPDiagnosticsService class, as shown in the following example.
Modify the value for ‘Maximum Upload Size’ property to specify the maximum size which is allowed for a single upload to any site under the web application. A value of ‘1000’ would set the max upload size to 1 GB. The maximum upload size cannot be increased beyond ‘2000’ (2 Gb)
From the SharePoint Management Shell, change the drive to which the server writes logs. To enable event log flooding protection, at the PowerShell command prompt, type the following command: For more information, see Set-SPDiagnosticConfig, Set-SPLogLevel and Get-SPLogLevel.
What is the unified logging service in SharePoint?
Developers could also write to the SharePoint log, known as the Unified Logging Service (ULS), but it required some extra work to write directly to the log files. Microsoft added more logging and debugging capabilities to SharePoint 2010 to help developers include additional monitoring and troubleshooting to their custom applications.