To use a custom user name mapper with the WebLogic Identity Assertion
provider (Default Identity Asserter):
If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
On the
Security Realms page, select the name of the
realm you are configuring (for example, TestRealm).
Expand
Providers > Authentication and select the
name of the Default Identity Asserter.
Expand
Configuration > Provider
Specific.
In the
User Name Mapper Class Name field, enter the
name of the implementation of the weblogic.security.providers.authentication.UserNameMapper
interface.
Click
Save.
In the
Change Center, click Activate Changes. If
automatic realm restart is enabled, you do not need to restart
WebLogic Server for updates to take effect.