SQL error [1810] [22008]: ora-01810: format code occurs twice

1、Oracle database , Today, query the display data according to the time and date ,SQL The sentence is ：
SELECT * FROM JCTJ_JXDB WHERE 
DATAMONTH = TO_DATE('2021-11-29 15:12:54','YYYY-MM-dd HH:mm:ss'), Then prompt the error information as follows ：

 2、 The main reason is that QL Case insensitive in ,MM and mm Is considered to be the same format code , therefore Oracle Of SQL Adopted mi Instead of minutes , Amend as follows SQL that will do ：SELECT * FROM JCTJ_JXDB WHERE 
DATAMONTH = TO_DATE('2021-11-29 15:12:54','YYYY-MM-dd HH:mi:ss'), After execution , Report the following error prompt ：

 3、 This is because we use 24 hourly , If our time is 0-12 Between , Yes, you can use HH It means , But now the hour we query is 15, Greater than 12, Therefore, you need to use HH24 To represent hours ,SQL The statement is as follows ：

SELECT * FROM JCTJ_JXDB WHERE 
DATAMONTH = TO_DATE('2021-11-29 15:12:54','YYYY-MM-dd HH24:mi:ss')

We often encounter similar date and time queries , I hope that's helpful ......

What a long long road! , I will go up and down ......