How to fix the Oracle error KUP-04077: unknown format specifier in file name string?

In this post, you’ll learn more about the Oracle ErrorKUP-04077: unknown format specifier in file name string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

KUP-04077: unknown format specifier in file name string

Reason for the Error KUP-04077: unknown format specifier in file name string

A format specifier is a percent sign followed by a character. The percent sign and character are replaced by a value depending on the character. This error occurs when the character following the percent sign is not defined to have a value.

How to fix the Error KUP-04077: unknown format specifier in file name string ?

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

See the documentation for information on valid format specifiers. If the file to be opened needs to have a percent sign in its name then use two pecent signs. They will get replaces by a single percent sign in the resulting file name.