syslog is one of the best logging utilities,The errpt logging is enabled by default in AIX. To enable syslog, /etc/syslog.conf file must be modified, here are the steps:
1. append follow in syslog.conf file:
*.debug /usr/syslog.log
*.info /usr/syslog.log
2. create the /usr/syslog.log
#touch /usr/syslog.log
3. refresh the syslog daemon
#refresh -s syslogd