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Event Logging Elements

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The elements of the event logging system are defined in the following bullets:

Event. An event is created each time you execute a program code (such as running a task).
Event Type. Event types are categories of events. For details on event types, see Siebel Server and Component Event Types.
Event Subtype. Event subtypes are code references that define the event. For details on event subtypes, see Siebel Server and Component Event Types.
Log Level. The log level determines the amount of information that is written to the log file. Log levels are set for event types. Table 19 lists the log levels of event types.
Severity. A severity level is associated with each event subtype. The severity level and log level share the same scale and are compared when writing events to the log file. Table 19 lists the severity of event subtypes.

Table 19. Severity and Log Levels

Log and Severity Level	Description
0	Fatal
1	Errors
2	Warnings
3	Informational
4	Details
5	Diagnostic

When an event occurs, the severity level of the event (as defined by the event subtype) is compared with the log level of the event type. If the severity level of the event is equal to or higher than the log level of the event type, then the event is written to the log file. If the severity level of the event is lower than the log level of the event type, then the event is ignored.

NOTE:  Event subtypes with lower numeric value have a higher priority. For example a value of 0 indicates the event subtype is more severe than one with a value of 5. By setting the event log level to a low number such as 1, only the most severe events are logged, but if the event log level is set to a higher number such as 5, more information is captured including less severe event subtypes.

For example, the Siebel Server components in the Enterprise Application Integration component group have an event type called EAI Siebel Wizard. Several event subtypes belong to the EAI Siebel Wizard event type, including:

EAI Siebel Wizard Invalid Business Component with a severity level of 2
EAI Siebel Wizard Invalid MVG with a severity level of 2
EAI Siebel Wizard MVG with a severity level of 3

While the Enterprise Application Integration component group is running, the process encounters a multi-value group (MVG). This encounter creates an event of the EAI Siebel Wizard MVG subtype. If the MVG is invalid, a second event of the EAI Siebel Wizard Invalid MVG subtype is created. If the log level of the EAI Siebel Wizard event type is set to 1, both events are ignored. If the log level is set to 3, both events are written to the log file.

Events are logged at the Siebel Server level and the component level. See Siebel Server Event Types for details on Siebel Server events; see Component Event Types for information on component events.

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