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Select on Binary XMLwith Large CDATA Fails with an ORA-600 [qmcxdEvtNextcont] (Doc ID 1393786.1)

Last updated on JANUARY 20, 2020

Applies to:

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


In and, a query on an XMLTYPE table with binary XML storage fails with an ORA-600 [qmcxdEvtNextcont]:

If the CLOB column CUSTOMER_NOTES which can contain > 8000 characters is excluded from the query, the error does not occur.

If the hint /*+ NO_XML_QUERY_REWRITE */ is used, the error does not occur, but the query runs for 45 minutes instead of the expected 5 minutes run time.


Database was upgraded from to or


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