Administration Console Online Help
Configuring a new security realm is a complicated task. If you configure a security realm incorrectly, you will not be able to set the security realm as the default security realm. Use this page to validate the configuration of a security realm.
Introduction to WebLogic Security
Developing Security Providers for WebLogic Server
Securing a Production Environment
The Security topics in the WebLogic Server 8.1 Upgrade Guide
The Security page in the WebLogic Server documentation