<alter_user_statement
> ::=
ALTER USER <user_name
> [<user_mode
>]
[TIMEOUT <unsigned_integer
> | TIMEOUT NULL]
[COSTWARNING <unsigned_integer> | COSTWARNING
NULL]
[COSTLIMIT <unsigned_integer> | COSTLIMIT
NULL]
[DEFAULT ROLE ALL [EXCEPT <role_name
>] | DEFAULT ROLE NONE
| DEFAULT ROLE <role_name> [IDENTIFIED BY
<password
>]]
[[NOT] EXCLUSIVE]
[DEFAULTCODE <ASCII |
UNICODE>]