ALTER PROFILE v16

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Name

ALTER PROFILE — Alter an existing profile.

Synopsis

ALTER PROFILE <profile_name> RENAME TO <new_name>;

ALTER PROFILE <profile_name>
      LIMIT {<parameter value>}[...];

Description

Use the ALTER PROFILE command to modify a user-defined profile. EDB Postgres Advanced Server supports two forms of the command:

  • Use ALTER PROFILE…RENAME TO to change the name of a profile.
  • Use ALTER PROFILE…LIMIT to modify the limits associated with a profile.

Include the LIMIT clause and one or more space-delimited parameter/value pairs to specify the rules enforced by EDB Postgres Advanced Server. Use ALTER PROFILE…RENAME TO to change the name of a profile.

Parameters

profile_name

The name of the profile.

new_name

The new name of the profile.

parameter

The attribute limited by the profile.

value

The parameter limit.

EDB Postgres Advanced Server supports these values for each parameter:

FAILED_LOGIN_ATTEMPTS specifies the number of failed login attempts that a user can make before the server locks them out of their account for the length of time specified by PASSWORD_LOCK_TIME. Supported values are:

  • An INTEGER value greater than 0.
  • DEFAULT — The value of FAILED_LOGIN_ATTEMPTS specified in the DEFAULT profile.
  • UNLIMITED — The connecting user can make an unlimited number of failed login attempts.

PASSWORD_LOCK_TIME specifies the length of time that must pass before the server unlocks an account that was locked because of FAILED_LOGIN_ATTEMPTS. Supported values are:

  • A NUMERIC value of 0 or greater. To specify a fractional portion of a day, specify a decimal value. For example, use the value 4.5 to specify 4 days, 12 hours.
  • DEFAULT — The value of PASSWORD_LOCK_TIME specified in the DEFAULT profile.
  • UNLIMITED — The account is locked until manually unlocked by a database superuser.

PASSWORD_LIFE_TIME specifies the number of days to use the current password before the user is prompted to provide a new password. Include the PASSWORD_GRACE_TIME clause when using the PASSWORD_LIFE_TIME clause to specify the number of days after the password expires before connections by the role are rejected. If you don't specify PASSWORD_GRACE_TIME, the password expires on the day specified by the default value of PASSWORD_GRACE_TIME. The user can't execute any command until they provide a new password. Supported values are:

  • A NUMERIC value of 0 or greater. To specify a fractional portion of a day, specify a decimal value. For example, use the value 4.5 to specify 4 days, 12 hours.
  • DEFAULT — The value of PASSWORD_LIFE_TIME specified in the DEFAULT profile.
  • UNLIMITED — The password doesn't have an expiration date.

PASSWORD_GRACE_TIME specifies the length of the grace period after a password expires until the user is forced to change their password. When the grace period expires, a user is allowed to connect but isn't allowed to execute any command until they update their expired password. Supported values are:

  • A NUMERIC value of 0 or greater. To specify a fractional portion of a day, specify a decimal value. For example, use the value 4.5 to specify 4 days, 12 hours.
  • DEFAULT — The value of PASSWORD_GRACE_TIME specified in the DEFAULT profile.
  • UNLIMITED — The grace period is infinite.

PASSWORD_REUSE_TIME specifies the number of days a user must wait before reusing a password. Use the PASSWORD_REUSE_TIME and PASSWORD_REUSE_MAX parameters together. If you specify a finite value for one of these parameters while the other is UNLIMITED, old passwords can never be reused. If both parameters are set to UNLIMITED, there are no restrictions on password reuse. Supported values are:

  • A NUMERIC value of 0 or greater. To specify a fractional portion of a day, specify a decimal value. For example, use the value 4.5 to specify 4 days, 12 hours.
  • DEFAULT — The value of PASSWORD_REUSE_TIME specified in the DEFAULT profile.
  • UNLIMITED — The password can be reused without restrictions.

PASSWORD_REUSE_MAX specifies the number of password changes that must occur before a password can be reused. Use the PASSWORD_REUSE_TIME and PASSWORD_REUSE_MAX parameters together. If you specify a finite value for one of these parameters while the other is UNLIMITED, old passwords can never be reused. If both parameters are set to UNLIMITED, there are no restrictions on password reuse. Supported values are:

  • An INTEGER value of 0 or greater.
  • DEFAULT — The value of PASSWORD_REUSE_MAX specified in the DEFAULT profile.
  • UNLIMITED — The password can be reused without restrictions.

PASSWORD_VERIFY_FUNCTION specifies password complexity. Supported values are:

  • The name of a PL/SQL function.
  • DEFAULT — The value of PASSWORD_VERIFY_FUNCTION specified in the DEFAULT profile.
  • NULL

PASSWORD_ALLOW_HASHED specifies whether an encrypted password is allowed. If you specify the value as TRUE, the system allows a user to change the password by specifying a hash-computed encrypted password on the client side. However, if you specify the value as FALSE, then a password must be specified in a plain-text form to validate without error. Supported values are:

  • A BOOLEAN value TRUE/ON/YES/1 or FALSE/OFF/NO/0.
  • DEFAULT — The value of PASSWORD_ALLOW_HASHED specified in the DEFAULT profile.
Note

The PASSWORD_ALLOW_HASHED isn't compatible with Oracle.

Examples

This example modifies a profile named acctg_profile:

ALTER PROFILE acctg_profile
       LIMIT FAILED_LOGIN_ATTEMPTS 3 PASSWORD_LOCK_TIME 1;

acctg_profile counts failed connection attempts when a login role attempts to connect to the server. The profile specifies that if a user doesn't authenticate with the correct password in three attempts, the account is locked for one day.

This example changes the name of acctg_profile to payables_profile:

ALTER PROFILE acctg_profile RENAME TO payables_profile;

See also

CREATE PROFILE, DROP PROFILE

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