How to change a user password in Oracle 184.108.40.206 by values
In later Oracle Database versions, you cannot change a user's password with the
clause, if there exists an old 10g hash value in the data dictionary.
If you provide an 11h hash value, this syntax will succeed, but users cannot log in and get
You can also provide the 10g hash to the "BY VALUES" clause, but in this case, the 11g password won't work.
If you provide one hash value like 11g, the existing one, like 10g, is deleted in the database.
But, it is possible to provide both hashes at the same time by concatenizing them with the ";" character:
See MOS note: Doc ID 1051962.101 also.