1. Open Visual Admin Tool. (usually in usr\sap\sid\DVEBMGS00\j2ee\admin)
2. Go to: active server -> Services -> LogConfigurator.
3. Click "To Advance Mode".
4. Go to the tab "Categories".
5. In each Severity field of all the logs, set the value to Error.
6. Go to the tab "Locations" and repeat the step 5.
7. Go to the active Dispatcher and repeat steps 2-6.
8. If there are more active servers, repeat the procedure for each Server
and Dispatcher node of each on of them, for the entire cluster.
9. Restart the server.