Alter User Or Database Statement. The ALTER USER or DATABASE statement has these parts. The ALTER USER or DATABASE statement has these parts.

Removing a service by using the ALTER DATABASE statement does not cause the remaining services to be re-distributed automatically. Oracle Database Security Guide for detailed information about user authentication methods. Use the ALTER USER statement.
ALTER USER Statement Access Control.
The ALTER USER or DATABASE statement has these parts. The new password to be associated with the specified user or database name. ALTER SCHEMA is a synonym for ALTER DATABASE. To permit a proxy server to connect as a client without authentication.