I'm trying to change the password of my user and I'm getting this error. The database is 9.2.0.6 Password complexity is enabled with custom function.
The description of the error is:
ORA-28221 REPLACE not specified

Cause: User is changing password but password verification function is turned on, the original password is not specified, and the user does not have the alter user system privilege.

Action: Supply the original password.

So how to change the password?