Choosing a Trace Type
After selecting one or more Host Integration Server components to be traced, decide the type of tracing to apply.
The following table describes the types of tracing available:
| Type of tracing | Activity traced | Applies to installed components |
|---|---|---|
| Internal* | Activity within a software component of Host Integration Server. | SnaBase, SnaServer (PU 2.1 node), SNA applications, link services and more. |
| Message | Messages passed into and out of a software component of Host Integration Server, including messages sent to and received from the network. | SnaBase, SnaServer (PU 2.1 node), SNA applications, link services and more. |
| API | Information passed into and out of a Host Integration Server DLL, as the DLL communicates with an application, such as the APPC DLL. | SNA applications and more. |
* Internal tracing is intended for use by product support technicians. Interpreting internal traces and certain types of message traces requires a specialized knowledge base.