Not Able to Insert National Characters or National Characters Are Dropped From Where Clause Using DG4ODBC (Doc ID 1468941.1)

Last updated on NOVEMBER 03, 2015

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 to 12.1.0.2 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Symptoms

Inserting into foreign database Unicode strings into nchar/nvarchar columns which require to_nchar or the N prefix fail using DG4ODBC

Another phenomena that can happen is when using a SELECT statement with a where clause based on the NCHAR columns then the where clause is dropped from the statement when being passed to the foreign database.
This problem can also happen with 12c database and gateway.

 

Cause

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