ORA-03001 WHEN RUNNING MERGE ON A XMLTYPE COLUMN OVER A DBLINK FROM 19C TO 12C DATABASE

Symptoms

When accessing a XMLType column(s) or XMLType table in a remote database via database link, an ORA-03001 is generated:


ERROR at line 9:

ORA-03001: unimplemented feature

ORA-02063: preceding line from SOMEDBLINK


XMLTYPE over DBLinks are not supported.  This is properly documented in Appendix B of the XDB Developer's Guide:


Solution

XMLTYPE over DBLinks are not supported, however, in earlier releases, it was not completely blocked by issuing an error like ORA-03001 for certain cases.  For those specific cases that should have been blocked in the old releases, patch.31385623 was created. Therefore, if available, download and apply patch.31385623 and see if it helps in your situation.


No other patch will be created to circumvent the restriction on accessing XMLType over dblinks.

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