How to fix the Oracle error ORA-36637: (XSDUNION05) The concat dimension cannot be defined as UNIQUE because it has a non-unique concat base dimension workspace object.?

In this post, you’ll learn more about the Oracle ErrorORA-36637: (XSDUNION05) The concat dimension cannot be defined as UNIQUE because it has a non-unique concat base dimension workspace object. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-36637: (XSDUNION05) The concat dimension cannot be defined as UNIQUE because it has a non-unique concat base dimension workspace object.

Reason for the Error ORA-36637: (XSDUNION05) The concat dimension cannot be defined as UNIQUE because it has a non-unique concat base dimension workspace object.

A non-unique concat dimension cannot be used as a base of a dependent unique concat.

How to fix the Error ORA-36637: (XSDUNION05) The concat dimension cannot be defined as UNIQUE because it has a non-unique concat base dimension workspace object. ?

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

CHGDFN any non-unique concat base dimensions to UNIQUE and retry.