How to resolve ORA-01846 Error Message in Oracle database

Learn the reason and how to get to the bottom of the ORA-01846 error message in Oracle.


When you encounter an ORA-01846 error, the following error message will appear:

ORA-01846: not a valid day of the week


You tried to enter a date value, but you certain a day of the week that is now not valid.


The option(s) to resolve this Oracle error are:

Option #1

Enter a valid day of the week.

For the D format code, 1-7 are valid values. For the DAY layout code, Sunday-Saturday are valid values. For the DD structure code, 1-31 are legitimate values. For the DDD structure code, 1-366 are valid values. For the DY layout code, Sun-Sat are valid values.

Learn more about the TO_DATE function.