How to fix the Oracle error XOQ-02529: The base attribute “string” of dimension “string” cannot be given an NVL expression because it is indexed.?

In this post, you’ll learn more about the Oracle ErrorXOQ-02529: The base attribute “string” of dimension “string” cannot be given an NVL expression because it is indexed. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

XOQ-02529: The base attribute “string” of dimension “string” cannot be given an NVL expression because it is indexed.

Reason for the Error XOQ-02529: The base attribute “string” of dimension “string” cannot be given an NVL expression because it is indexed.

Cause: An NVL expression was specified for a base attribute that is indexed. An attribute is indexed if it is explicitly marked as indexed by the user, or if it is a unique key attribute, or if the populate lineage flag is set.

How to fix the Error XOQ-02529: The base attribute “string” of dimension “string” cannot be given an NVL expression because it is indexed. ?

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

Action: Remove the NVL expression or change the attribute so that it is not indexed, is not a unique key, and does not have the populate lineage flag set.