How to fix the Oracle error ORA-39829: function-based index on columnar data made unusable?

In this post, you’ll learn more about the Oracle ErrorORA-39829: function-based index on columnar data made unusable with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-39829: function-based index on columnar data made unusable

Reason for the Error ORA-39829: function-based index on columnar data made unusable

An attempt was made to load a columnar table with a function-based index using SQL*Loader direct path load.

How to fix the Error ORA-39829: function-based index on columnar data made unusable ?

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

Rebuild the function-based index after the load completes.