Manage the application server trace service

We can manage the trace service for a server process while the server is stopped and while it is running. We can specify which components to trace, where to send trace output, the characteristics of the trace output device, and which format to generate trace output in.

Modify the trace settings to help with diagnosing problems or tuning performance within certain applications.

IBM recommends using the High Performance Extensible Logging (HPEL) log and trace infrastructure . We view HPEL log and trace information using the logViewer .

Tasks

1. Start the administrative console.

2. Click Troubleshoot > Logs and Trace > server.

3. Click the Diagnostic Trace link.

4. (iSeries) On the Configuration tab, do not select the None option. If this option is selected, the trace data is not logged or recorded anywhere. All other handlers (including handlers registered by applications) still have an opportunity to process these traces.

5. (iSeries) On the Runtime tab, select either the Memory Buffer or File Trace Output option.

6. Specify the appropriate values for our configuration for either the Memory Buffer or File Trace Output option.

7. Click Apply.

8. Click Troubleshoot > Logs and Trace > server.

9. Click the Change Log Detail Levels link.

10. Under Additional properties, click Change Log Detail Levels.

11. On the Runtime tab, change the existing trace state by changing the trace specification to the desired state.

12. Click Apply.

Use High Performance Extensible Logging to troubleshoot applications