Setting up component trace (CTRACE)

This file describes how to set up CTRACE

WebSphere Application Server for z/OS uses z/OS component trace (CTRACE) facilities to manage the collection and storage of trace data. Unless you configure specific CTRACE controls, WebSphere Application Server for z/OS records its trace data in address-space buffers in private (pageable) storage. This data is not accessible unless a dump of the address space is taken.

Although CTRACE data is primarily output for IBM service personnel to use, exploiting CTRACE capabilities at your installation allows you to have additional trace data available when a problem first occurs. Because CTRACE efficiently uses system resources, you can collect valuable trace data with minimal impact on performance.

When your installation first customizes and verifies WebSphere Application Server for z/OS installation, you have the option of defining CTRACE controls and resources. Using the ISPF customization dialog to configure a base application server node, you can specify:

The ISPF customization dialog generates instructions for:

  1. Starting the CTRACE writer
  2. Starting the WebSphere Application Server for z/OS application server
Following the instructions in sequence is quite important; you can lose valuable trace data if you do not start the CTRACE writer before starting the server.

For information about the advantages of using CTRACE facilities, see z/OS MVS Diagnosis: Tools and Service Aids, GA22-7589


Related reference
Steps for preparing CTRACE controls and resources
Steps for starting CTRACE as part of WebSphere Application Server for z/OS customization
Steps for starting CTRACE while WebSphere Application Server for z/OS servers are active
Using CTRACE to collect trace data for Java server applications
Setting output destinations and characteristics
Setting trace controls
Viewing CTRACE and JRas data through IPCS
Related topics
z/OS MVS Diagnosis: Tools and Service Aids



Searchable topic ID:   rtrb_setupCTRACE
Last updated: Jun 21, 2007 9:56:50 PM CDT    WebSphere Application Server for z/OS, Version 5.0.2
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