The Network Server uses the derby.log file to
log problems that it encounters. It also logs connections when the property derby.drda.logConnections is
set to true. The derby.log file is created
when the server
is started. The Network Server then records the time and version. If a log
file exists, it is overwritten, unless the property derby.infolog.append is
set to true.
When the Network Server is logging connections,
it also logs the Connection Number; this log message is written both to the derby.log file
and to the Network Server console.