After Upgrade of MySQL ODBC Driver DG4ODBC Returns a VARCHAR Column as NVARCHAR (Doc ID 2081828.1)

Last updated on JANUARY 19, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

After upgrading the MySQL connector and ODBC driver manager -

ODBC manager (unixODBC) : 2.2.14 to 2.3.0
MySQL connector : mysql-connector-odbc-5.1.5r1144-7.el6.x86_64 to mysql-connector-odbc-5.3.4-1.el6.x86_64

Then a select using (Database Gateway for ODBC (DG4ODBC) returns a column as NVARCHAR that was previously returned as VARCHAR.

Cause

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