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ORA-12704: Character Set Mismatch Error With Union Query On NVARCHAR2 Columns (Doc ID 3024206.1)

Last updated on JUNE 29, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 19.3.0.0.0 and later
Information in this document applies to any platform.

Symptoms

"ORA-12704: character set mismatch" error when SQL has UNION clause with NVARCHAR2 column in the column projection

Changes

 Database Upgrade from 12c to 19c

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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