Log Configuration with the Config Tool

You can perform the following log configuration activities offline, using the Config Tool:

Adding, removing, editing and creating log controllers, destinations and formatters.
More information:

Adding, Editing, and Removing Log Controllers

Adding, Editing, and Removing Log Destinations

Adding, Editing, and Removing Log Formatters

Caution

These activities have to be done with extreme care and only by users who are familiar with the SAP Logging API in detail. More information: SAP Logging API

End of the caution.
You can switch on/off writing traces to one file, as well as exclude certain locations from being written to one trace file. This is done using the Log Manager's properties ForceSingleTraceFile and SingleTraceFile_UnrestrictedLocations, correspondingly.
More information: Log Manager