Use this command to collect data to debug problems associated with the internal operation of the Licensed Internal Code.
This function is typically used at the request of your service provider.
The Internal Trace (TRCINT) command is used to collect data about the internal operation of the Licensed Internal Code. Use TRCINT to debug a problem that you can re-create, but is not visible at the application level. For example, you can use TRCINT to debug Licensed Internal Code in the TCP/IP protocol stack and sockets.
To use the CL commands to perform
the internal trace, you must have *SERVICE special authority, or be authorized
to the service trace function of i5/OS™ through iSeries™ Navigator. See the chapter on
user profiles in iSeries Security
Reference 
for more information about this type of authority.