How to fix the Oracle error SQL*Loader-00503: Error appending extension to file (string)?

In this post, you’ll learn more about the Oracle ErrorSQL*Loader-00503: Error appending extension to file (string) with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

SQL*Loader-00503: Error appending extension to file (string)

Reason for the Error SQL*Loader-00503: Error appending extension to file (string)

SQL*Loader could not append the default extension to create the filename. The given name could be too long or contain illegal characters.

How to fix the Error SQL*Loader-00503: Error appending extension to file (string) ?

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

Check the specified filename.