Changing the language of SystemOut.log without changing the operation system’s locale

. Logon to the Websphere Application Server console.

2. Navigate to Servers --> Application Servers --> <server name> --> Process Definition --> Java Virtual Machine.
3. Add the parameters below in the Generic JVM arguments:
-Duser.language=<language code> -Duser.region=<country code>

For example:
if it is a Chinese environment and you want to display English in the SystemOut.log file, you can set
-Duser.language=en -Duser.region=US

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