The following is a known issue associated with this release of the password synchronization module:
Bug 6989471
The following error may be displayed on the Administrative and User Console when you use the Forgot Password option to change the password:
Error: 15:16:07,640 ERROR [ACCOUNTMANAGEMENT] Class/Method: tcDataBase/getUser encounter some problems: Invalid user found: anonymous java.lang.RuntimeException: Invalid user found: anonymous
However, the password is correctly updated in both Oracle Identity Manager and the target system. You can ignore the error.