Oracle 12c: DeriveParameters Fails With "Unsupported PL/SQL Datatype" (Doc ID 1638202.1)

Last updated on FEBRUARY 03, 2019

Applies to:

Oracle Data Provider for .NET - Version 11.2.0.4 and later
Information in this document applies to any platform.

ODP.Net application uses OracleCommandBuilder.DeriveParameters method to execute stored procedures which has XMLTYPE as parameters. it fails with

"Unsupported PL/SQL datatype at parameter position n" error. Where n is the position of the parameter of XMLTYPE

This is only reproducible with 11.2.0.4 and 12.1.0.1 databases

Sample Test Case:
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Database stored procedure creation script:
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Symptoms

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