How to fix the Oracle error ORA-39157: error appending extension to file “string”?

In this post, you’ll learn more about the Oracle ErrorORA-39157: 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

ORA-39157: error appending extension to file “string”

Reason for the Error ORA-39157: error appending extension to file “string”

Export or Import was unable to append the default extension to create the file name. The given file name could be too long or contain illegal characters. Subsequent messages will detail the problems.

How to fix the Error ORA-39157: error appending extension to file “string” ?

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

Fix the problems outlined in the secondary messages.