Control logging level by WebSphere admin console

Question

I have a web application in which I am using java.util.logging. In my logging.properties files default level is info. I have loggers in my application for all levels of logging (info, debug, fatal etc). This web application will be deployed on WebSphere 8.

What if I want to change logging level, lets say from info to error, of application through WAS admin console at runtime? How can I achieve this?

Solution 1

Log into WAS Admin console and click on Troubleshooting->Logs and trace->your server->Diagnostic trace service->Change log level details.

There you can add your own log levels, e.g.

com.example.test.*=all

You can change it permanently, or you can change log levels dynamically on runtime (tab "Runtime"). Log levels are separated with ':'.

Solution 2

In addition to Magic Wand answer:

• Changes on the Configuration tab are valid after server restart
• Changes on the Runtime tab are valid only till server restart unless you checked Save runtime changes to configuration as well
• You can either type your trace string in the text area, or select it using the Components tree (your packages may not be visible, if classes were not loaded yet)
• All messages with levels fine, finer, finest will go to the trace.log not to the SystemOut.log.