On Linux and UNIX systems, all IBM® Integration Bus messages (other than messages that are generated by the command-line utilities) are sent to the syslog subsystem.
You must configure this subsystem so that all diagnostic messages that enable you to monitor the performance and behavior of your broker environment are displayed.
The configuration steps you make to ensure that all relevant messages are displayed depend on the version of Linux and UNIX that you are using. Refer to your operating system documentation relating to syslog (or syslog-ng for some versions of Linux) for information about how to configure the syslog subsystem.
user.info /var/log/user.log
Many UNIX systems provide a command-line utility, known as logger, to help you test and refine your configuration of the syslog subsystem.
On UNIX, syslog entries are restricted in length and messages that are sent to the syslog are truncated by the new line character. To record a large amount of data in a log on UNIX, set the Destination property on the Trace node to File or User Trace instead of Local Error Log.
See the documentation for your operating system.