The following topics provide troubleshooting tips:
My Oracle Support for Additional Troubleshooting Information
AdminServer Won't Start if the Wrong Java Path Given with WebLogic Server Installation
Disabling Windows Challenge/Response Authentication on IIS Web Servers
Changing UserIdentityStore1 Type Can Lock Out Administrators
jps Logger Class Instantiation Warning is Logged on Authentication
OAM Metric Persistence Timer IllegalStateException: SafeCluster
Partial Cluster Failure and Intermittent Login and Logout Failures