Oracle This user name

Busy work every day, ah, really busy, today in the work of a small problem, is the oracle of the user name, Oracle does not seem to provide a statement such as rename, so can only directly change the lower view, this is my experimental results

SELECT * from user$ where name= ' TEST '

Set Name= ' Wangpeng '
where user#=62

Commit

Alter system checkpoint;

alter system flush Shared_pool; (Empty the Oracle cache, force to read the disk, after the change, depending on the password is invalid, can only use the following statement to reset the password)

Alter user Wangpeng identified by Wangpeng