How to configure NLS parameters settings In JBoss EAP

Issue

• We have installed JBoss EAP 6.4 on a Windows machine choosing English language, now we have this default language configuration when we make a new connection to Oracle databases through a datasource.

• Is there a way to change this default datasource configuration or should we reinstall the server? How the server is configured in spanish language having Oracle session default parameters?

• Is there any NLS_LANG configuration in JBoss to change the default datasource language configuration?

• Should we put NLS_LANG as a java parameter in the starting scrips or there is a better way to configure it?