Dameng database_ User password policy

User password policy , namely ： The complexity of using Hukou order , This is related to the security of users .

User password management

The maximum user password of Dameng database is 48 byte , At present, the system supports several password strategies ：

Parameter values	Corresponding strategies
0	No strategy
1	It is forbidden to be the same as the user name
2	The password length is not less than 9
4	Contains at least one capital letter （A~Z）
8	Include at least one number （0~9）
16	Include at least one punctuation mark （ In English input mode , except '' And all the symbols outside the space ）

It should be noted that , Password policy can be used alone , You can also combine . In combination , If it is necessary to set the password length not less than 9 And contain at least one capital letter （A~Z）, Then you only need to set the policy 2（ The password length is not less than 9） And strategy 4（ Contains at least one capital letter ） The sum of the , namely 2+4=6 that will do .

The default password policy of the database is 2.

Password policy setting method

1、 When you create a user , Specify the password policy of the secondary user .

It should be noted that , This method can only be used in the secure version of Damon database , Other versions do not support .

CREATE USER TEST_1 IDENTIFIED BY A1234 PASSWORD_POLICY 5;
 
[ Execute statement 1]:
CREATE USER TEST_1 IDENTIFIED BY A1234 PASSWORD_POLICY 5;
 Execution failure ( sentence 1)
 The first 1  An error occurred near the line [-5630]:
 Non secure versions cannot do this 
 
1 Statement execution failed 

2、 stay DM Of INI Parameters PWD_POLICY Specify the system default password policy

Mode one ： Modify through console tools

Mode two ： Call system stored procedure SP_SET_PARA_VALUE(), To reset PWD_POLICY Value .
Such as ：
 

SP_SET_PARA_VALUE(1,'PWD_POLICY',3)

Dynamic parameters , Immediate effect .

View password policy

Mode one ：

SELECT * FROM V$PARAMETER WHERE NAME='PWD_POLICY';

Mode two ：

SELECT SF_GET_PARA_VALUE(1,'PWD_POLICY');

Dameng community address ：https://eco.dameng.com