Log Configuration 
You can perform log configuration activities, using the following methods:
Configuring online the severities of log controllers in the whole system or in a certain system instance.
More information: Log Configuration with the SAP NetWeaver Administrator.
Performing more advanced log configuration tasks, such as creating log controllers, adding log destinations, configuring log formatters, and so on.
More information: Log Configuration with the Config Tool.
Activating or deactivating log file archiving.
More information: Configuring Log Files Archiving.
Performing some advanced log configuration tasks by using the LOG group of shell commands.
More information: LOG.