Oracle自動鎖住不經常使用的用戶指的是什么

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說明

Starting with this release, you can configure user accounts to automatically lock if they have been inactive over a period of time.

The CREATE USER and ALTER USER SQL statements enable you to set a new profile parameter, INACTIVE_ACCOUNT_TIME, which enables you to automatically lock inactive accounts.

從12.2開始，Oracle會自動將不活躍(超過一定時間沒有操作)的用戶鎖住。該時間是通過參數INACTIVE_ACCOUNT_TIME來設置的。

該參數單位：天。表示從該用戶上次成功登陸開始計算，如果超過參數設定的天數，那么Oracle會自動鎖住該用戶。
該參數默認是UNLIMITED，需要手動開啟。

SQL> select profile,resource_name,limit from dba_profiles t where t.resource_name='INACTIVE_ACCOUNT_TIME';
PROFILE        RESOURCE_NAME        LIMIT
------------------------------ ------------------------------ --------------------
DEFAULT INACTIVE_ACCOUNT_TIME UNLIMITED
ORA_STIG_PROFILE         INACTIVE_ACCOUNT_TIME        35
TEST_PROFILE         INACTIVE_ACCOUNT_TIME        35

關于該參數的更多說明：

• INACTIVE_ACCOUNT_TIME默認值是UNLIMITED，也就是不啟用自動鎖用戶.

• 參數值是15到24855之間.

• 如果不想自動鎖用戶，則需要把 INACTIVE_ACCOUNT_TIME參數值設置為UNLIMITED.

• 想將該參數時間設置為默認PROFILE中指定的參數值，可設置 INACTIVE_ACCOUNT_TIME 參數值為 DEFAULT.

• You can set this parameter for all database authenticated users, including administrative users, but not for external or global authenticated users.

• In a read-only database, the last successful login is not considered in the INACTIVE_ACCOUNT_TIME timing. It is not possible to lock a user account in a read-only database (except by performing consecutive failed logins equal in number to the account’s FAILED_LOGIN_ATTEMPTS password profile setting).

• For a newly created user account, the timing begins at account creation time. When this user logs out and then logs again, the timing starts when the user successfully logs in.

• In a multitenant environment, the INACTIVE_ACCOUNT_TIME setting applies to the last time a common user logs in to the root. A common user is considered active if this user logs in to any of the PDBs or the root.

• For a proxy user account login, the INACTIVE_ACCOUNT_TIME begins the timing when the proxy user logs in successfully.

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