Logging streams and expected output

Investigating the logging and tracing output for the application server is an excellent way to observe performance, diagnose problems, and gain a general understanding of how the application server is working within your environment. The expected output locations for logging and trace information can be different depending on the operating system on which the application server is running.

Logging and tracing output streams are directed as follows for distributed and IBM i operating systems:
Table 1. Log and trace output for distributed and IBM i
Log or trace stream Expected output
Java trace Trace.log. You must have tracing enabled.
Java logs
  • Trace.log, when you enable tracing.
  • Activity.log. The Activity.log file is also directed to the Showlog output.
  • SystemOut.log
System.out stream
  • Trace.log
  • SystemOut.log
System.err stream SystemErr.log
cout (the C or C++ output stream) Native stdout
cerr (the C or C++ error stream) Native stderr
Graphical representation of logging



Related concepts
Java logging
Related tasks
Adding logging and tracing to your application
Concept topic Concept topic    

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