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High CPU Usage when Selecting an XMLELEMENT with XMLATTRIBUTES Referring to a Namespace (Doc ID 1907124.1)

Last updated on MARCH 10, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.


When an XMLTYPE contains namespaces not declared in the root element, like in the following example

may spin on CPU, and is necessary to kill the session as the query does not complete, even if the execution plan shows that it might be executed
in fragments of seconds.


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