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Editorial Team
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Asked: 2026-05-22T14:35:54+00:00

I have an MVIEW on the DEV server as CREATE MATERIALIZED VIEW MY_MVIEW AS

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I have an MVIEW on the DEV server as

CREATE MATERIALIZED VIEW MY_MVIEW
AS
SELECT  col1 AS "N° INVOICE" from TABLE

The MVIEW has been installed on PROD server and when i check for its query i have the characther ° not recognized

SELECT query from user_mviews where mview_name = 'MY_MVIEW' ;

QUERY
---------------------------------------
SELECT  col1 AS "N? INVOICE" from TABLE

we use Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
for both environments .

Any idea why this happened and how to correct it? or I need to rename my alias?

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1 Answer

  1. Editorial Team

    Whenever you see a question mark instead of a special character it means that the client’s character set does not support that character and a conversion was not available.

    The conversion happens with the database character set as the source and the client character set as the target. The environment variable NLS_LANG lets you control the client character set. NLS_LANG must be set before the connection is opened and it cannot be changed during the session.

    For more information about NLS_LANG refer to the Oracle® Database Globalization Support Guide

    BTW, NLS_LANGUAGE has nothing to do with the character set! It only controls language used in server messages and locale settings.

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