The following table describes the event IDs, trace collection points, and PRF trace collection levels.

Table 8-34 Details of trace collection points in a Web container (memory session failover functionality)

Event ID	No. in the figure#1	Trace acquisition points	Level
0x8203	1	Immediately before invoking the filter that is executed before the execution of the servlet or JSP that receives the request (when the [[dispatcher]] tag of the [[filter-mapping]] tag of web.xml is omitted, or when a filter for which REQUEST is specified in the [[dispatcher]] tag is invoked)	B
0x8E01	2	When the process for sending a request with the stub starts	A
0x8E05	3	During the processing for receiving the request at the server side	A
0x8405	4	Immediately after the EJB container receives the request	A
0x8406	5	Immediately before the EJB container sends a response	A
0x8E06	6	During the processing for sending a response at the server side	A
0x8E02	7	When the process for receiving a response with the stub is complete	A
0x8218#2	8	Immediately before starting de-serialization of the memory session failover functionality	A
0x8318#2	9	Immediately after the termination of de-serialization of the memory session failover functionality	A
0x8203	10	Immediately before invoking the filter that is executed before the execution of the servlet or JSP that receives the request (when the [[dispatcher]] tag of the [[filter-mapping]] tag of web.xml is omitted, or when a filter for which REQUEST is specified in the [[dispatcher]] tag is invoked)	B
0x8202	11	Immediately before invoking a servlet or JSP	A/B
0x8207	11	Immediately before invoking the static contents (DefaultServlet)	B
0x8302	12	Immediately after the completion of processing of the servlet or JSP	A/B
0x8307	12	Immediately after the completion of processing of the static contents (DefaultServlet)	B
0x8303	13	Immediately after the completion of processing of the filter that is executed before the execution of the servlet or JSP that receives the request (when the processing of the filter for which REQUEST is specified in the [[dispatcher]] tag of the [[filter-mapping]] tag of web.xml is complete)	B
0x8217#2	14	Immediately before starting the serialization of the memory session failover functionality	A
0x8317#2	15	Immediately after the termination of serialization of the memory session failover functionality	A
0x8E01	16	When the process for sending a request with the stub starts	A
0x8E05	17	During the processing for receiving the request at the server side	A
0x8405	18	Immediately after the EJB container receives the request	A
0x8406	19	Immediately before the EJB container sends a response	A
0x8E06	20	During the processing for sending a response at the server side	A
0x8E02	21	When the process for receiving a response with the stub is complete	A
0x8203	22	Immediately before invoking the filter that is executed before the execution of the servlet or JSP that receives the request (when the [[dispatcher]] tag of the [[filter-mapping]] tag of web.xml is omitted, or when a filter for which REQUEST is specified in the [[dispatcher]] tag is invoked)	B

Legend:

A: Standard

B: Advanced

A/B: Different information is collected for the Standard and Advanced levels.

--: Not applicable

#1

Corresponds to the numbers in Figure 8-23.

#2

Output when all of the below conditions are fulfilled:

- The inheritance of the objects of a serializable class is enabled.

- Session information to be serialized exists.

The following figure shows the trace collection points in the memory session failover functionality.

Figure 8-23 Trace collection points in a Web container (memory session failover functionality)