
You can configure the maximum size of the log file, the maximum number of log files, and the name of the log file. By default, the maximum log file size is 10 MB and the maximum number of log files is 5. When a log file reaches its size limit, a new file is created, up to the maximum number of log files. After the maximum number of log files has been created, the first log file is deleted and replaced by a new one.
You can view log file properties in SAP NetWeaver Administrator, but to modify these properties you use the AS Java - Config Tool.