HP-UX SNAplus2 Diagnostics Guide

Overview of Problem Solving
Types of Diagnostic Information
Chapter 1 19
Types of Diagnostic Information
This section describes the range of diagnostic information that is
available to you to resolve SNAplus2 system problems, and how to use
each type.
SNAplus2 diagnostic information can be categorized in the following
way:
• “Notification” information is always available to you; it cannot be
turned on or off. This type of information indicates that an error has
occurred and should be investigated. It includes of error messages,
error logs and alerts.
• “Diagnostic” information can be controlled, and should be used to
gather further information on specific problems. This type of
information includes exception logs, audit logs, and tracing data.
SNAplus2 also provides online help information that can be useful in
preventing or resolving problems.
When SNAplus2 is running, you will generally use all these types of
information, at different times, to resolve any problems that you may
encounter.
For example, when APPC application program is running, different
SNAplus2 events such as starting or stopping a session may occur. Each
event is made up of a number of smaller events. So a session event can
include internal events such as connecting to an LU, starting the session,
security checking, and link initialization. You can configure SNAplus2 to
log each of these smaller normal events to a file called an audit log file, if
you wish to record them all.
When a program fails, SNAplus2 provides several diagnostic resources,
each of which gives you different types and levels of information about
the events that have occurred. This information can be displayed on your
screen or logged to a file called an error log file. Further event
information for a particular area of SNAplus2 can also be generated and
collected in a file when you activate traces for a specific feature of
SNAplus2.
This section describes all these types of information and how you might
use them.
Information from Program Error Messages