How to fix the Oracle error XOQ-01900: The dimension level has invalid or no unique key attributes.?

In this post, you’ll learn more about the Oracle ErrorXOQ-01900: The dimension level has invalid or no unique key attributes. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

XOQ-01900: The dimension level has invalid or no unique key attributes.

Reason for the Error XOQ-01900: The dimension level has invalid or no unique key attributes.

Cause: The dimension level had an associated materialized view, but it had no unique key attributes.

How to fix the Error XOQ-01900: The dimension level has invalid or no unique key attributes. ?

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

Action: Create at least one unique key attribute.