Microsoft Office Tutorials and References
In Depth Information
Each ULS trace event is mapped to a single category. The Excel Services categories are representative of
the major components, and all Excel Services trace events use one of the eight categories. As mentioned
earlier, the information contained in the ULS trace event log is intended to be used by support
personnel, so the categories provide an opportunity for filtering, sorting, and narrowing the focus of an
investigation into a customer-reported problem.
The default configuration specifies that all categories are logged at the Medium level.
As previously mentioned, the ULS is aware of 11 trace logging levels. The 11 levels represent the
exclusive list of values that can be displayed in the ULS trace log level field. The ULS trace level throttling
interface does not expose all 11 to you as options for throttling. Instead, seven choices are presented
from which you can choose. You can choose the least-critical events that you want to see in the ULS trace
log. (The trace logging levels were shown in a previous table, with the most-critical level appearing first
in the list.)
You can set a specific logging level for each ULS trace category. The first entry in the list of categories is
ALL and, as its name implies, it allows you to set a common ULS trace logging level for all MOSS
categories. This is particularly helpful when you want to get all of the MOSS categories back to a known
logging level without having to go through the entire list.
If you choose to set a logging level for specific categories instead of using ALL, keep in mind that you
can select only one category in the list. The task of setting a level for individual categories is tedious,
because you have to apply the change for one category, reload the metrics page, apply the change for the
next category, reload the metrics page, and so on.
The Diagnostic Logging page also contains the following drop-down category, event log, and trace log
throttling controls (as previously shown in Figure 7-26):
Select A Category — Use this control in conjunction with either of the following two controls to
select the category for which you want to change event throttling. When this control has focus,
you can quickly navigate it by typing the first character of the category you are looking for. For
example, type an E to put focus on the eApproval item in the list. This control does not support
Least Critical Event To Report To The Event Log — This control allows you to set the logging level
for the Windows event log (discussed in the next section). The setting you choose for this
control is applied to the selected category in the previous control. The default value for the All
category is Success.
Least Critical Event To Report To The Trace Log — This control allows you to set the logging level
for the ULS trace log. The setting you choose for this control is applied to the selected category
in the previous control. The default value for the All category is Medium.
The Event Viewer provides another view of the ULS Logging System output. The ULS trace logs are
targeted toward Product Support, and the Event Viewer logs are for the administrator. The volume of
events seen in the Event Viewer is a fraction of the traces that appear in the ULS trace logs. The Event