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javaunixweblogicstdoutredhat

Reading live output of application when its already running

My setup:

  • Red Hat with:
  • Weblogic installation which hosts my (java) application.

What I try to achieve: See the output (an error) of my application

Why I this way and not easier (set proper logging on the application itself):

  • This is a production server of a big company, I am not allowed to do any changes to the running applications
  • In the application something goes wrong and I am tasked with fixing it.
  • I checked the weblogic logs but they dont capture all the output of the application, and thus it does not capture the error im searching for.

So is there a way I can sort of connect to stdout/stderr and see the output printed live? (other suggestions are also most welcome but if its possible this seems like the easiest way to go?)

Extra info:

  • I have checked and confirmed the application writes to console, so it should appear in stdout. (right?)
Solution

  • Unless I misunderstand your question, you want to tail the logs.

    Navigate to the directory where your logs are stored and run

    tail -f LOGNAME.log

    This should print to your console live any additional log lines that are added.