How to fix the Oracle error ORA-27416: BYDAY clause in repeat interval or calendar contains an invalid weekday?

In this post, you’ll learn more about the Oracle ErrorORA-27416: BYDAY clause in repeat interval or calendar contains an invalid weekday with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-27416: BYDAY clause in repeat interval or calendar contains an invalid weekday

Reason for the Error ORA-27416: BYDAY clause in repeat interval or calendar contains an invalid weekday

The BYDAY clause of the repeat interval contained a value that did not represent a weekday.

How to fix the Error ORA-27416: BYDAY clause in repeat interval or calendar contains an invalid weekday ?

You can fix this error in Oracle by following the below steps

Use the correct three letter abbreviations for weekdays, for example MON for Monday and FRI for Friday.