You might want to read XMLTYPE which says:

XMLType is a system-defined opaque type for handling XML data. It as predefined member functions on it to extract XML nodes and fragments.

You cannot call the member function getclobval on a NULL.

In reply to Re^3: DBD Oracle ORA_XMLTYPE Seg Fault by mje
in thread DBD Oracle ORA_XMLTYPE Seg Fault by grump-

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