Most of the Application use “OAM_REMOTE_USER” or “Proxy-remote-user” for the SSO setup which is sent by OAM in the Header. But some applications (like some Apex apoplications) still use “REMOTE_USER” for SSO with OAM. This Remote_user is generated by Weblogic itself based on the user authenticated and retrieved by method “request.getRemoteUser()”. With version 10.3.x this method was deprecated and not enabled automatically with start of weblogic as it opens a security vulnerability. However this Remote user can be enabled explicitly when weblogic is started with the Run time argument “- Dweblogic.http.enableRemoteUserHeader=true ”. Add this value in JAVA Properties of setDomainenv.sh and Remote user will be enabled. Please note that this is not preferred way to do that as the logged in user can be retrieved with “proxy-remote-user” header but can be solution in the case many applications are using “request.getRemoteUser()” method for SSO setup.
The views expressed on this blog are my own and do not necessarily reflect the views of my employer.