The Directory Server detected that the database has been replaced. This is an unsafe and unsupported operation. User Action: ...

The Directory Server detected that the database has been replaced.  This is an unsafe and unsupported operation.
 
 User Action:
 None.  Active Directory Domain Services was able to recover the database in this instance, but this is not guaranteed in all circumstances. Replacing the database is strongly discouraged.  The user is strongly encouraged to use the backup and restore facility to rollback the database.