WAS v8.5 > Troubleshoot > Add logging and tracing to the application > Logging Common Base Events in WAS > The Common Base Event in WASTypes of problem determination events
Problem determination involves multiple types of data, including at least two different classes of event data, log events, and diagnostic events.
Log events, which are also referred to as message events, are typically emitted by components of a business application during normal deployment and operations. Log events might identify problems, but these events are also normally available and emitted while an application and its components are in production mode. The target audience for log and message events is users and administrators of the application and the components that make up the application. Log events are normally the only events available when a problem is first detected, and are typically used during both problem recovery and problem resolution.
Diagnostic events, which are commonly referred to as trace events, are used to capture internal diagnostic information about a component, and are usually not emitted or available during normal deployment and operation. The target audience for diagnostic events is the developers of the components that make up the business application. Diagnostic events are typically used when trying to resolve problems within a component, such as a software failure, but are sometimes used to diagnose other problems, especially when the information provided by the log events is not sufficient to resolve the problem. Diagnostic events are typically used when trying to resolve a problem.
A Common Base Event is a common structure for an event. It defines common fields, the values these fields can take, and the exact meanings of these values for an event. Common Base Events are primarily used to represent log events.
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The Common Base Event in WAS
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