ORA-01810 format code appears twice

I got ” ORA-01810 format code appears twice ”  error in Oracle database.

 

ORA-01810 format code appears twice

 

Details of error are as follows.

ORA-01810 format code appears twice

Cause: A format code was listed twice in a date specification. Each format code may be
 specified only once in the function TO_DATE.

Action: Remove the duplicate format code from the date specification, then retry the operation.

 

 

format code appears twice

This ORA-01810 error is related with the format code was listed twice in a date specification. Each format code may be specified only once in the function TO_DATE.

Remove the duplicate format code from the date specification, then retry the operation.

TO_DATE function format codes are as follows, so check your code and fix the error.

Format CodeExplanation
YEARYear, spelled out
YYYY4-digit year
MMMonth (01-12; JAN = 01).
MONAbbreviated name of month.
MONTHName of month, padded with blanks to length of 9 characters.
DDay of week (1-7).
DAYName of day.
DDDay of month (1-31).
DDDDay of year (1-366).
DYAbbreviated name of day.
HHHour of day (1-12).
HH12Hour of day (1-12).
HH24Hour of day (0-23).
MIMinute (0-59).
SSSecond (0-59).
SSSSSSeconds past midnight (0-86399).

For example; If you run the following code, you will get this error.

SELECT TO_DATE('2021/05/06 4:29 PM', 'YYYY/MM/DD HH:MM PM' ) FROM dual;

 

You got this error, because you have used MM twice, you should use the MI instead of MM as follows.

SELECT TO_DATE('2021/05/06 4:29 PM', 'YYYY/MM/DD HH:MI PM' ) FROM dual;

 

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Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )

 

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About Mehmet Salih Deveci

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