1、连接上Linux数据库服务器，切换到Oracle数据库用户桌面，打开终端，进入到环境变量$ORACLE_HOME目录

Last login: Fri Dec 11 13:26:18 2015 from 192.168.1.100

[root@Linux主机名 ~]# su - oracle

[oracle@Linux主机名 dbhome_1]$ cd $ORACLE_HOME/rdbms/admin

[oracle@Linux主机名 admin]$

2、查看Oracle11g数据库提供的默认密码复杂度函数脚本(Oracle安装目录下的/rdbms/admin/utlpwdmg.sql文件)

[oracle@Linux主机名 admin]$ cat $ORACLE_HOME/rdbms/admin/utlpwdmg.sql

脚本详细内容详见文章末尾

3、登录Oracle数据库并执行Oracle11g数据库提供的默认密码复杂度函数脚本

[oracle@Linux主机名 admin]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Fri Dec 11 13:33:58 2015

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn /as sysdba

Connected.

SQL> @?/rdbms/admin/utlpwdmg.sql

Function created.

Profile altered.

Function created.

SQL>

4、在PL/SQL中创建用户的资源文件，执行下面语句

CREATE PROFILE 资源文件名 LIMIT

SESSIONS_PER_USER UNLIMITED

CPU_PER_SESSION UNLIMITED

CPU_PER_CALL UNLIMITED

CONNECT_TIME UNLIMITED

IDLE_TIME 600  --10小时连续不活动的话系统自动断开连接

LOGICAL_READS_PER_SESSION UNLIMITED

LOGICAL_READS_PER_CALL UNLIMITED

COMPOSITE_LIMIT UNLIMITED

PRIVATE_SGA UNLIMITED

FAILED_LOGIN_ATTEMPTS 10  --指定锁定用户的登录失败次数为10次，超过10次则系统被自动锁定

PASSWORD_LIFE_TIME 180  --指定用户同一密码锁允许使用的天数为180天

PASSWORD_REUSE_TIME UNLIMITED

PASSWORD_REUSE_MAX UNLIMITED

PASSWORD_LOCK_TIME 1  --指定用户被锁定天数为1天

PASSWORD_GRACE_TIME 10 --数据库发出警告到登录失效前的宽限天数

PASSWORD_VERIFY_FUNCTION verify_function_11G

5、测试更新用户密码

--创建用户并使用自定义的配置文件

create user 用户名 identified by 密码 default tablespace 默认表空间名 temporary tablespace 临时表空间名 profile 资源文件名;

--用户授权

grant connect,resource,exp_full_database,imp_full_database to 用户名;

--更新用户密码为简单的字符串

alter user 用户名 identified by 123456;

--更新用户密码为复杂的字符串

alter user 用户名 identified by Csdn_20151211;

6、结论：发现简单密码无法更新，复杂的密码更新成功。

附：$ORACLE_HOME/rdbms/admin/utlpwdmg.sql脚本源文件内容

Rem

Rem $Header: utlpwdmg.sql 02-aug-2006.08:18:05 asurpur Exp $

Rem

Rem utlpwdmg.sql

Rem

Rem Copyright (c) 2006, Oracle. All rights reserved.

Rem

Rem    NAME

Rem      utlpwdmg.sql - script for Default Password Resource Limits

Rem

Rem    DESCRIPTION

Rem      This is a script for enabling the password management features

Rem      by setting the default password resource limits.

Rem

Rem    NOTES

Rem      This file contains a function for minimum checking of password

Rem      complexity. This is more of a sample function that the customer

Rem      can use to develop the function for actual complexity checks that the

Rem      customer wants to make on the new password.

Rem

Rem    MODIFIED   (MM/DD/YY)

Rem    asurpur     05/30/06 - fix - 5246666 beef up password complexity check

Rem    nireland    08/31/00 - Improve check for username=password. #1390553

Rem    nireland    06/28/00 - Fix null old password test. #1341892

Rem    asurpur     04/17/97 - Fix for bug479763

Rem    asurpur     12/12/96 - Changing the name of password_verify_function

Rem    asurpur     05/30/96 - New script for default password management

Rem    asurpur     05/30/96 - Created

Rem

-- This script sets the default password resource parameters

-- This script needs to be run to enable the password features.

-- However the default resource parameters can be changed based

-- on the need.

-- A default password complexity function is also provided.

-- This function makes the minimum complexity checks like

-- the minimum length of the password, password not same as the

-- username, etc. The user may enhance this function according to

-- the need.

-- This function must be created in SYS schema.

-- connect sys/ as sysdba before running the script

CREATE OR REPLACE FUNCTION verify_function_11G

(username varchar2,

password varchar2,

old_password varchar2)

RETURN boolean IS

n boolean;

m integer;

differ integer;

isdigit boolean;

ischar  boolean;

ispunct boolean;

db_name varchar2(40);

digitarray varchar2(20);

punctarray varchar2(25);

chararray varchar2(52);

i_char varchar2(10);

simple_password varchar2(10);

reverse_user varchar2(32);

BEGIN

digitarray:= '0123456789';

chararray:= 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';

-- Check for the minimum length of the password

IF length(password) < 8 THEN

raise_application_error(-20001, 'Password length less than 8');

END IF;

-- Check if the password is same as the username or username(1-100)

IF NLS_LOWER(password) = NLS_LOWER(username) THEN

raise_application_error(-20002, 'Password same as or similar to user');

END IF;

FOR i IN 1..100 LOOP

i_char := to_char(i);

if NLS_LOWER(username)|| i_char = NLS_LOWER(password) THEN

raise_application_error(-20005, 'Password same as or similar to user name ');

END IF;

END LOOP;

-- Check if the password is same as the username reversed

FOR i in REVERSE 1..length(username) LOOP

reverse_user := reverse_user || substr(username, i, 1);

END LOOP;

IF NLS_LOWER(password) = NLS_LOWER(reverse_user) THEN

raise_application_error(-20003, 'Password same as username reversed');

END IF;

-- Check if the password is the same as server name and or servername(1-100)

select name into db_name from sys.v$database;

if NLS_LOWER(db_name) = NLS_LOWER(password) THEN

raise_application_error(-20004, 'Password same as or similar to server name');

END IF;

FOR i IN 1..100 LOOP

i_char := to_char(i);

if NLS_LOWER(db_name)|| i_char = NLS_LOWER(password) THEN

raise_application_error(-20005, 'Password same as or similar to server name ');

END IF;

END LOOP;

-- Check if the password is too simple. A dictionary of words may be

-- maintained and a check may be made so as not to allow the words

-- that are too simple for the password.

IF NLS_LOWER(password) IN ('welcome1', 'database1', 'account1', 'user1234', 'password1', 'oracle123', 'computer1', 'abcdefg1', 'change_on_install') THEN

raise_application_error(-20006, 'Password too simple');

END IF;

-- Check if the password is the same as oracle (1-100)

simple_password := 'oracle';

FOR i IN 1..100 LOOP

i_char := to_char(i);

if simple_password || i_char = NLS_LOWER(password) THEN

raise_application_error(-20007, 'Password too simple ');

END IF;

END LOOP;

-- Check if the password contains at least one letter, one digit

-- 1. Check for the digit

isdigit:=FALSE;

m := length(password);

FOR i IN 1..10 LOOP

FOR j IN 1..m LOOP

IF substr(password,j,1) = substr(digitarray,i,1) THEN

isdigit:=TRUE;

GOTO findchar;

END IF;

END LOOP;

END LOOP;

IF isdigit = FALSE THEN

raise_application_error(-20008, 'Password must contain at least one digit, one character');

END IF;

-- 2. Check for the character

<>

ischar:=FALSE;

FOR i IN 1..length(chararray) LOOP

FOR j IN 1..m LOOP

IF substr(password,j,1) = substr(chararray,i,1) THEN

ischar:=TRUE;

GOTO endsearch;

END IF;

END LOOP;

END LOOP;

IF ischar = FALSE THEN

raise_application_error(-20009, 'Password must contain at least one \

digit, and one character');

END IF;

<>

-- Check if the password differs from the previous password by at least

-- 3 letters

IF old_password IS NOT NULL THEN

differ := length(old_password) - length(password);

differ := abs(differ);

IF differ < 3 THEN

IF length(password) < length(old_password) THEN

m := length(password);

ELSE

m := length(old_password);

END IF;

FOR i IN 1..m LOOP

IF substr(password,i,1) != substr(old_password,i,1) THEN

differ := differ + 1;

END IF;

END LOOP;

IF differ < 3 THEN

raise_application_error(-20011, 'Password should differ from the \

old password by at least 3 characters');

END IF;

END IF;

END IF;

-- Everything is fine; return TRUE ;

RETURN(TRUE);

END;

/

-- This script alters the default parameters for Password Management

-- This means that all the users on the system have Password Management

-- enabled and set to the following values unless another profile is

-- created with parameter values set to different value or UNLIMITED

-- is created and assigned to the user.

ALTER PROFILE DEFAULT LIMIT

PASSWORD_LIFE_TIME 180

PASSWORD_GRACE_TIME 7

PASSWORD_REUSE_TIME UNLIMITED

PASSWORD_REUSE_MAX UNLIMITED

FAILED_LOGIN_ATTEMPTS 10

PASSWORD_LOCK_TIME 1

PASSWORD_VERIFY_FUNCTION verify_function_11G;

-- Below is the older version of the script

-- This script sets the default password resource parameters

-- This script needs to be run to enable the password features.

-- However the default resource parameters can be changed based

-- on the need.

-- A default password complexity function is also provided.

-- This function makes the minimum complexity checks like

-- the minimum length of the password, password not same as the

-- username, etc. The user may enhance this function according to

-- the need.

-- This function must be created in SYS schema.

-- connect sys/ as sysdba before running the script

CREATE OR REPLACE FUNCTION verify_function

(username varchar2,

password varchar2,

old_password varchar2)

RETURN boolean IS

n boolean;

m integer;

differ integer;

isdigit boolean;

ischar  boolean;

ispunct boolean;

digitarray varchar2(20);

punctarray varchar2(25);

chararray varchar2(52);

BEGIN

digitarray:= '0123456789';

chararray:= 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';

punctarray:='!"#$%&()``*+,-/:;<=>?_';

-- Check if the password is same as the username

IF NLS_LOWER(password) = NLS_LOWER(username) THEN

raise_application_error(-20001, 'Password same as or similar to user');

END IF;

-- Check for the minimum length of the password

IF length(password) < 4 THEN

raise_application_error(-20002, 'Password length less than 4');

END IF;

-- Check if the password is too simple. A dictionary of words may be

-- maintained and a check may be made so as not to allow the words

-- that are too simple for the password.

IF NLS_LOWER(password) IN ('welcome', 'database', 'account', 'user', 'password', 'oracle', 'computer', 'abcd') THEN

raise_application_error(-20002, 'Password too simple');

END IF;

-- Check if the password contains at least one letter, one digit and one

-- punctuation mark.

-- 1. Check for the digit

isdigit:=FALSE;

m := length(password);

FOR i IN 1..10 LOOP

FOR j IN 1..m LOOP

IF substr(password,j,1) = substr(digitarray,i,1) THEN

isdigit:=TRUE;

GOTO findchar;

END IF;

END LOOP;

END LOOP;

IF isdigit = FALSE THEN

raise_application_error(-20003, 'Password should contain at least one digit, one character and one punctuation');

END IF;

-- 2. Check for the character

<>

ischar:=FALSE;

FOR i IN 1..length(chararray) LOOP

FOR j IN 1..m LOOP

IF substr(password,j,1) = substr(chararray,i,1) THEN

ischar:=TRUE;

GOTO findpunct;

END IF;

END LOOP;

END LOOP;

IF ischar = FALSE THEN

raise_application_error(-20003, 'Password should contain at least one \

digit, one character and one punctuation');

END IF;

-- 3. Check for the punctuation

<>

ispunct:=FALSE;

FOR i IN 1..length(punctarray) LOOP

FOR j IN 1..m LOOP

IF substr(password,j,1) = substr(punctarray,i,1) THEN

ispunct:=TRUE;

GOTO endsearch;

END IF;

END LOOP;

END LOOP;

IF ispunct = FALSE THEN

raise_application_error(-20003, 'Password should contain at least one \

digit, one character and one punctuation');

END IF;

<>

-- Check if the password differs from the previous password by at least

-- 3 letters

IF old_password IS NOT NULL THEN

differ := length(old_password) - length(password);

IF abs(differ) < 3 THEN

IF length(password) < length(old_password) THEN

m := length(password);

ELSE

m := length(old_password);

END IF;

differ := abs(differ);

FOR i IN 1..m LOOP

IF substr(password,i,1) != substr(old_password,i,1) THEN

differ := differ + 1;

END IF;

END LOOP;

IF differ < 3 THEN

raise_application_error(-20004, 'Password should differ by at \

least 3 characters');

END IF;

END IF;

END IF;

-- Everything is fine; return TRUE ;

RETURN(TRUE);

END;

/

-- This script alters the default parameters for Password Management

-- This means that all the users on the system have Password Management

-- enabled and set to the following values unless another profile is

-- created with parameter values set to different value or UNLIMITED

-- is created and assigned to the user.

-- Enable this if you want older version of the Password Profile parameters

-- ALTER PROFILE DEFAULT LIMIT

-- PASSWORD_LIFE_TIME 60

-- PASSWORD_GRACE_TIME 10

-- PASSWORD_REUSE_TIME 1800

-- PASSWORD_REUSE_MAX UNLIMITED

-- FAILED_LOGIN_ATTEMPTS 3

-- PASSWORD_LOCK_TIME 1/1440

-- PASSWORD_VERIFY_FUNCTION verify_function;

————————————————

版权声明：本文为CSDN博主「疾风铸境」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。

原文链接：https://blog.csdn.net/xqf222/article/details/50263181

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