prlogging.xml is a log4j configuration file that enables two log files for the extraction process, PegaBIX and PegaBIX-ALERT. By default, the log files are written to the directory where the extraction process is started. Ensure that you set logging levels appropriately, because turning up logging levels to DEBUG or ALERT can lead to performance issues, including slower extracts or full log files.
Modify the FileNamePattern for the PegaBIX and PegaBIX-ALERT logs to change the location to which they are output.