GA Announcement : Oracle XML DB features are now supported in Autonomous Data Warehouse
SummaryOracle XML DB features are now supported in Autonomous Database.
Oracle XML DB features are now supported in Autonomous Database. This enables existing customers who currently use XML DB to more easily migrate to Autonomous Database. These features also enables all Autonomous Database customers to easily query and access XML data. Please note that some Oracle XML DB features are restricted so refer to the documentation for a complete list of supported features. - links to documentation for Autonomous Data Warehouse.
For more information click here - links to Appendix B (Autonomous Data Warehouse for Experienced Oracle Database Users