Events
The XLANG Scheduler Engine generates COM+ events when running an XLANG schedule. These events are generated at various stages of execution of a schedule. BizTalk Server ships with one tool and a sample program to monitor these COM+ events and capture an execution trace. These tools are described in the following sections.
The XLANG Scheduler Engine also generates entries for the system event log when runtime errors occur. Figure 11.8 depicts how events can be filtered in the event log.
Figure 11.8. Filtering application events.
Using the Event Viewer administrative tool, you can select the Application event log in the tool and then use the right mouse menu to select a viewing option to filter the events shown. You will see the dialog shown in Figure 11.8 for setting the Filter options. Figure 11.8 shows that the display will be filtered to show only the XLANG Scheduler events. You can further choose to view just a specific category of the events, as shown in the drop-down list.
You can use both these capabilities to monitor the operation of your schedules. In addition, you can write custom components that monitor for specific events of interest and generate messages when such events occur. Other general-purpose system tools, such as the Performance Monitor and the Visual Studio development environment, will augment your monitoring capabilities.