Oracle : Ошибка ORA-19022

"Unoptimized XML construct detected."
*Document: YES
*Cause: XMLOptimizationCheck is enabled and unrewritten XML construct was detected. This prevents execution of XML construct.
*Action: Make sure that XML construct is being optimized. See trace file for further information. Disable XMLOptimizationCheck if you want the unoptimized XML operation to be executed.

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