ALTER USER
Function
ALTER USER modifies the attributes of a database user.
Precautions
Session parameters modified by ALTER USER apply to a specified user and take effect in the next session.
Syntax
Modify user permissions or other information.
ALTER USER [IF EXISTS] user_name [ [ WITH ] option [ ... ] ];
The option clause is as follows:
{ CREATEDB | NOCREATEDB } | { CREATEROLE | NOCREATEROLE } | { INHERIT | NOINHERIT } | { AUDITADMIN | NOAUDITADMIN } | { SYSADMIN | NOSYSADMIN } | {MONADMIN | NOMONADMIN} | {OPRADMIN | NOOPRADMIN} | {POLADMIN | NOPOLADMIN} | { USEFT | NOUSEFT } | { LOGIN | NOLOGIN } | { REPLICATION | NOREPLICATION } | {INDEPENDENT | NOINDEPENDENT} | {VCADMIN | NOVCADMIN} | {PERSISTENCE | NOPERSISTENCE} | CONNECTION LIMIT connlimit | [ ENCRYPTED | UNENCRYPTED ] PASSWORD { 'password' [EXPIRED] | DISABLE | EXPIRED } | [ ENCRYPTED | UNENCRYPTED ] IDENTIFIED BY { 'password' [ REPLACE 'old_password' | EXPIRED ] | DISABLE } | VALID BEGIN 'timestamp' | VALID UNTIL 'timestamp' | RESOURCE POOL 'respool' | PERM SPACE 'spacelimit' | PGUSER
Change the username.
ALTER USER user_name RENAME TO new_name;
Lock or unlock.
ALTER USER user_name ACCOUNT { LOCK | UNLOCK };
Change the value of a specified parameter associated with the user.
ALTER USER user_name SET configuration_parameter { { TO | = } { value | DEFAULT } | FROM CURRENT };
Reset the value of a specified parameter associated with the user.
ALTER USER user_name RESET { configuration_parameter | ALL };
Parameter Description
user_name
Specifies the current username.
Value range: an existing username
new_password
Specifies a new password.
The new password must:
- Differ from the old password.
- Contain at least eight characters. This is the default length.
- Differ from the username or the username spelled backward.
- Contain at least three types of the following four types of characters: uppercase characters (A to Z), lowercase characters (a to z), digits (0 to 9), and special characters, including: ~!@#$%^&*()-_=+\|[{}];:,<.>/?
Value range: a string
old_password
Specifies the old password.
ACCOUNT LOCK | ACCOUNT UNLOCK
- ACCOUNT LOCK: locks an account to forbid login to databases.
- ACCOUNT UNLOCK: unlocks an account to allow login to databases.
PGUSER
In the current version, the PGUSER attribute of a user cannot be modified.
For details about other parameters, see “Parameter Description” in CREATE ROLE and ALTER ROLE.
Example
See Examples in CREATE USER.
Helpful Links
CREATE ROLE, CREATE USER, and DROP USER