Author: Dênio Flávio

Dênio Flávio Garcia is an Oracle ACE Associate and Oracle APEX & PL/SQL Solution Architect with over 15 years of experience building real-world solutions on Oracle Database. Certified in SQL, PL/SQL, APEX, and Oracle Cloud Infrastructure, he writes here about practical lessons from the field: process automation, integrations, and scalable applications.

SQL

Updating XML Stored as CLOB in Oracle Using XMLQuery
ByDênio Flávio 01/31/202608/23/2026

Using a simplified shopping cart XML example, the content shows how to safely modify an XML element while properly handling namespaces and following the required copy / modify / return pattern defined by the XQuery standard.

The example intentionally reflects real-world constraints, where the XML is already stored as CLOB and changing the data model to XMLTYPE is not an option. The focus is on clarity, maintainability, and correct usage of supported Oracle XML features rather than deprecated functions.

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