Using SQL Developer with XDB/XMLType on 12c requires Patch 16881111
(Doc ID 1575523.1)
Last updated on FEBRUARY 27, 2019
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 to 184.108.40.206 [Release 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 Backup Service - Version N/A and later
Information in this document applies to any platform.
From 220.127.116.11 onwards, if you are using SQL Developer with XML Database (XDB) and accessing XMLType then its possible to run into errors like:
SQL Error: Only LOB or String Storage is supported in Thin XMLType
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