Diagnostic trace service settings

To view this page, click the following path:
Note: You can also configure tracing from the MVS console using the modify command.
Note: The Trace Output, Memory Buffer, and Trace Output Format panels do not apply to the z/OS platform.

Configuration tab

Enable Log

Enables the log service.

If this option is not selected, the following configuration properties are not passed to the application server trace service at server startup.

Selecting the option turns off only the final step of logging these records to the WebSphere trace file. All other handlers (including handlers registered locally by customers or even applications) still have an opportunity to process these traces.

Trace Output

Specifies where trace output should be written. The trace output can be written directly to an output file, or stored in memory and written to a file on demand using the Dump button found on the run-time page.

Different components can produce different amounts of trace output per entry. Naming and security tracing, for example, produces a much higher trace output than Web container tracing. Consider the type of data being collected when you configure your memory allocation and output settings.

Memory Buffer

Specifies that the trace output should be written to an in-memory circular buffer. If you select this option you must specify the following parameters:
  • Maximum Buffer Size
    • Specifies the number of entries, in thousands, that can be cached in the buffer. When this number is exceeded, older entries are overwritten by new entries.

Trace Output Format

Specifies the format of the trace output.

You can specify one of three levels for trace output:
  • Basic (Compatible)
    • Preserves only basic trace information. Select this option to minimize the amount of space taken up by the trace output.
  • Advanced
    • Preserves more specific trace information. Select this option to see detailed trace information for use in troubleshooting and problem determination.
  • Log Analyzer
    • Preserves trace information in a format that is compatible with the Log Analyzer tool. Select this option if you want to use the trace output as input to the Log Analyzer tool.

Runtime tab

Trace Output

Specifies where trace output should be written. The trace output can be written directly to an output file, or stored in memory and written to a file on demand using the Dump button found on the run-time page.

Memory Buffer

Specifies that the trace output should be written to an in-memory circular buffer. If you select this option you must specify the following parameters:
  • Maximum Buffer Size
    • Specifies the number of entries, in thousands, that can be cached in the buffer. When this number is exceeded, older entries are overwritten by new entries.



Related tasks
Working with trace
Related reference
Modify command
Example: Establishing a general level of trace
Example: Setting basic and detailed trace levels
Example: Setting specific trace points
Example: Excluding specific trace points
Example: Resetting to the initial trace settings
Example: Turning off tracing
Reference topic    

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Last updated: Aug 29, 2010 8:25:23 PM CDT
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