Oracle OLEDB Provider Returns Incorrect Defined Size For Nchar Column Using ADO

(Doc ID 1151004.1)

Last updated on FEBRUARY 06, 2011

Applies to:

Oracle Provider for OLE DB - Version: 10.2.0.5 to 11.2.0.1 - Release: to 11.2
Microsoft Windows (32-bit)

Symptoms

You are selecting a record from an NCHAR (25) column using the Oracle Provider for OLEDB with ADO and it returns actualSize= 50, definedSize=50. However, on previous client versions,  it returns definedSize = 25, actualSize = 50.

Cause

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