今天在oracle數據庫中修改用戶密碼的時候發現了一個下面的規律

1 密碼只由字母組成，創建成功

SQL> alter user ics identified by password;

User changed.

2 密碼只由數字組成，創建成功

SQL> alter user ics identified by 123456;

User changed.

3 密碼由字母+數字組成，創建成功

SQL> alter user ics identified by password123;

User changed.

4 密碼由數字+字母組成，創建失敗

SQL> alter user ics identified by 1q2w3e;

ERROR at line 1:

ORA-00922: missing or invalid option

5 密碼由數字+密碼組成時，必須加雙引號才能成功

SQL> alter user ics identified by "1q2w3e";

User changed.

SQL> conn ics/1q2w3e

Connected.

創建用戶時候同理

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oracle 用戶密碼原則