) Monitoring and troubleshooting:

 

Performance Monitoring Infrastructure (PMI)

WAS PMI extends the JSR-077 specification, collecting performance data, which can used by, among other tools, Tivoli Performance Viewer (TPV), to provide reports.

 

PMI Request Metrics

PMI Request Metrics log time spent in major components, such as Web Server, Web container, Enterprise bean container, and database. These data points are recorded in logs and can be written to Application Response Time (ARM) agents used by Tivoli monitoring tools.

 

Performance Advisors

IBM WAS includes two performance advisors to help tune systems for optimal performance. The Runtime Performance Advisor runs in the appserver process, writes output to SystemOut.log file, and offers the following types of advice:

The performance adviser in the TPV offers the above, as well as:

  • Dynamic cache size
  • JVM heap size
  • DB2 Performance Configuration Wizard

 

Problem Determination Steps

Here are problem determination steps, in escalation order:

  1. Find a log
  2. Use troubleshooting tools
  3. Turn on trace
  4. Add logging and tracing to your apps
  5. Get help from IBM

 

IBM is a trademark of the IBM Corporation in the United States, other countries, or both.

 

Tivoli is a trademark of the IBM Corporation in the United States, other countries, or both.