sap系统关于系统登录和密码的主要参数设置

To make the parameters globally effective in an SAP System (system profile parameters), set them in the default system profile DEFAULT.PFL. However, to make them instance-specific, you must set them in the profiles of each application server in your SAP System.To display the documentation for one of the parameters, choose Tools CCMS Configuration Profile Maintenance (transaction RZ10), specify the parameter name and choose Display. On the following screen, choose the Documentation pushbutton.Password ChecksParameterDescriptionlogin/min_password_lngDefines the minimum length of the password. Default value: 3; permissible values: 3 40Until SAP NetWeaver 6.40 (inclusive), up to 8 characters.login/min_password_digitsDefines the minimum number of digits (0-9) in passwords.Default value: 0; permissible values: 0 40Available as of SAP Web AS 6.10 (Until SAP NetWeaver 6.40 (inclusive), up to 8 characters.)login/min_password_lettersDefines the minimum number of letters (A-Z) in passwords. Default value: 0; permissible values: 0 40Available as of SAP Web AS 6.10 (Until SAP NetWeaver 6.40 (inclusive), up to 8 characters.)login/min_password_specialsDefines the minimum number of special characters in the password Permissible special characters are, in particular, ! $%&/()=?*+#-_.,;:| and space After SAP NetWeaver 6.40, all characters that are not letters or digits are regarded as special characters.Default value: 0; permissible values: 0 40Available as of SAP Web AS 6.10 (Until SAP NetWeaver 6.40 (inclusive), up to 8 characters.)login/password_charsetThis parameter defines the characters of which a password can consist.Permissible values: 0 (restrictive): The password can only consist of digits, letters, and the following (ASCII) special characters :! $%&/()=?*+#-_.,;:| and space 1 (backward compatible, default value): The password can consist of any characters including national special characters (such as , , from ISO Latin-1, 8859-1). However, all characters that are not contained in the set above (for value = 0) are mapped to the same special character, and the system therefore does not differentiate between them. 2 (not backward compatible): The password can consist of any characters. It is converted internally into the Unicode format UTF-8. If your system does not support Unicode, you may not be able to enter all characters on the logon screen. This restriction is limited by the codepage specified by the system language.With login/password_charset = 2, passwords are stored in a format that systems with older kernels cannot interpret. You must therefore only set the profile parameter to the value 2 after you have ensured that all systems involved support the new password coding.Available in the standard system as of SAP Web AS 6.40.login/min_password_diffDefines the minimum number of characters that must be different in the new password compared to the old password.Default value: 1; permissible values: 1 40Available as of SAP Web AS 6.10 (Until SAP NetWeaver 6.40 (inclusive), up to 8 characters.)login/password_expiration_timeDefines the validity period of passwords in days.Default value: 0; permissible values: 0 -1000login/password_change_for_SSOIf the user logs on with Single Sign-On, checks whether the user must change his or her password.Available as of SAP Web AS 6.10, as of SAP Basis 4.6 by Support Packagelogin/disable_password_logonControls the deactivation of password-based logon This means that the user can no longer log on using a password, but only with Single Sign-On variants (X.509 certificate, logon ticket). See Logon Data Tab PageAvailable as of SAP Web AS 6.10, as of SAP Basis 4.6 by Support Packagelogin/password_logon_usergroupControls the deactivation of password-based logon for user groupsAvailable as of SAP Web AS 6.10, as of SAP Basis 4.6 by Support Packagelogin/min_password_lowercaseSpecifies how many characters in lower-case letters a password must contain. Permissible values: 0 40; default value 0Available after SAP NetWeaver 6.40login/min_password_uppercaseSpecifies how many characters in upper-case letters a password must contain. Permissible values: 0 40; default value 0Available after SAP NetWeaver 6.40login/password_history_sizeSpecifies the number of passwords (chosen by the user, not the administrator) that the system stores and that the user cannot use again.Permissible values: 1 100 (unit: number of entries); default value 5Available after SAP NetWeaver 6.40login/password_downwards_compatibilitySpecifies the degree of backward compatibility to be achieved. The default value is 1, where the values have the following meaning:0With login/password_downwards_compatibility = 0, passwords are stored in a format that systems with older kernels cannot interpret. The system only generates new (backward incompatible) password hash values.1The system also generates backward compatible password hash values internally, but does not evaluate these for password-based logons (to its own system). This setting is required, if this system is used as the central system of a Central User Administration that systems that only support backward compatible password hash values are also connected to the system group.2The system also generates backward compatible password hash values internally, which it evaluates if a logon with the new, non-backward compatible password failed. In this way, the system checks whether the logon would have been accepted with the backward compatible password (truncated after eight characters, and converted to upper-case). This is recorded in the system log. The logon fails. This setting is to allow the identification of backward incompatibility problems.3As with 2, but the logon is regarded as successful. This setting is to allow the avoidance of backward incompatibility problems.4As with 3, but no entry is created in the system log.5Full backward compatibility: the system only creates backward compatible password hash values.Available after SAP NetWeaver 6.40login/password_change_waittimeSpecifies the number of days that a user must wait before changing the password again.Permissible values: 1 1,000 (unit: days); default value 1Available after SAP NetWeaver 6.40login/password_compliance_to_current_policyPermissible values: 0 no check; 1 the system checks during password logon whether the current password complies with the current password rules and forces a password change if this is not the case.Default value: 0Available after SAP NetWeaver 6.40login/password_max_idle_productiveSpecifies the maximum period for which a productive password (a password chosen by the user) remains valid if it is not used. After this period has expired, the password can no longer be used for authentication. The user administrator can reactivate password-based logon by assigning a new initial password.Permissible values: 0 24,000 (unit: days); Default value 0, that is, the check is deactivatedAvailable after SAP NetWeaver 6.40login/password_max_idle_initialSpecifies the maximum period for which an initial password (a password chosen by the administrator) remains valid if it is not used. After this period has expired, the password can no longer be used for authentication. The user administrator can reactivate password-based logon by assigning a new initial password.This parameter replaces the profile parameters login/password_max_new_valid and login/password_max_reset_valid.Permissible values: 0 24,000 (unit: days); Default value 0, that is, the check is deactivatedAvailable after SAP NetWeaver 6.40login/password_max_new_validDefines the validity period of passwords for newly created users.Only available in SAP Web Application Server 6.20 and 6.40.login/password_max_reset_validDefines the validity period of reset passwords.Only available in SAP Web Application Server 6.20 and 6.40.Multiple LogonParameter Descriptionlogin/disable_multi_gui_loginControls the deactivation of multiple dialog logonsAvailable as of SAP Basis 4.6login/multi_login_usersList of excepted users (multiple logon)Available as of SAP Basis 4.6Incorrect LogonParameter Descriptionlogin/fails_to_session_endDefines the number of unsuccessful logon attempts before the system does not allow any more logon attempts. The parameter is to be set to a value lower than the value of parameter login/fails_to_user_lock.Default value: 3; permissible values: 1 -99login/fails_to_user_lockDefines the number of unsuccessful logon attempts before the system locks the user. By default, the lock applies until midnight.Default value: 12; permissible values: 1 -99login/failed_user_auto_unlockDefines whether user locks due to unsuccessful logon attempts should be automatically removed at midnight.Default value: 1 (Lock applies only on same day); permissible values: 0, 1SSO Logon TicketParameter Descriptionlogin/accept_sso2_ticketAllows or locks the logon using SSO ticket.Available as of SAP Basis 4.6D, as of SAP Basis 4.0 by Support Packagelogin/create_sso2_ticketAllows the creation of SSO tickets.Available as of SAP Basis 4.6Dlogin/ticket_expiration