The open structure of Web Services means that all the services are accessible to the public. Therefore, you may trace who uses the services by logging access to Web Services.
Error messages and log files can be found in the webservice.log file in OEBPS_HOME\logs. The Log category information is hardcoded in com.savvion.util.Nlog.java. All log4j calls from classes not defined in com.savvion.util.Nlog —including messages from Axis’s log4j—are redirected to the oebps.log file in OEBPS_HOME\logs.