Displaying Event Data for a Product Subcomponent Viewing the Event Log to Display Details

3-8 Configuring and Using the Diagnostics Framework for Oracle WebLogic Server ■ Section 3.5.2.1, Displaying Event Data for a Product Subcomponent ■ Section 3.5.2.2, Viewing the Event Log to Display Details ■ Section 3.5.2.3, Tracking Execution Flow by Analyzing an Operative Set ■ Section 3.5.2.4, Expanding the Operative Set and Viewing Correlated Diagnostic Data

3.5.2.1 Displaying Event Data for a Product Subcomponent

When you start JRockit Mission Control and open a JFR file, you can use the Event Types View to quickly select the specific events you want to analyze. As you select and deselect items in the Event Types Browser which is available in the Event Types View, the information displayed in the JFR graphical user interface is updated instantly to show information about only the selected event types. Figure 3–3 shows the Event Types Browser with only servlet event types selected. Figure 3–3 Event Types Browser

3.5.2.2 Viewing the Event Log to Display Details

To view details about the events logged by one or more event types, select the Log tab, which is available at the bottom of the JFR graphical user interface. An example of the Log tab for servlet event types is shown in Figure 3–4 . Using WLDF with Oracle JRockit Flight Recorder 3-9 Figure 3–4 Servlet Event Log When using the Log tab, you can view details about events as follows: ■ You can click on individual column heads in the Event Log table to modify the sort order of the events. For example, by clicking the Duration column, you can quickly identify the events that took the longest time to execute. ■ When you select an event in the Event Log table, details about that event are displayed in the Event Attributes table. For example, Figure 3–4 shows the following attributes: – Event start, end, and duration times – User ID of person who issued the request on the servlet – Method, class name, and URI of invoked servlet – Execution context ID ECID Different event types have different attributes. For example, if this were a JDBC event, you could scroll among the attributes to see the SQL statement, the JDBC connection pool used, and the stack from which it was called. The interface makes it easy to scan for unexpected behavior that can be analyzed in deeper detail. Note: The value of the ECID is a unique identifier that can be used to correlate individual events as being part of the same request execution flow. For example, events that are identified as being related to a particular request typically have the same ECID value, as shown in Section 3.5.2.3, Tracking Execution Flow by Analyzing an Operative Set. However, the format of the ECID string itself is determined by an internal mechanism that is subject to change; therefore, you should not have or place any dependencies on that format. 3-10 Configuring and Using the Diagnostics Framework for Oracle WebLogic Server

3.5.2.3 Tracking Execution Flow by Analyzing an Operative Set