How to Diagnose Losing Characters , Getting "Funny" Output When Inserting or Selecting Other Than A-Z,a-z ( = Non English Data Like Chinese, Russian, Hebrew , Insert Any Language Here to the List That is Not English) in/from CHAR, VARCHAR2, LONG or CLOB

(Doc ID 1628060.1)

Last updated on MARCH 08, 2018

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database - Standard Edition - Version and later
Information in this document applies to any platform.
***Checked for relevance on 10-Oct-2016***


Trying to select from or insert in CHAR, VARCHAR2, LONG or CLOB datatypes other than A-Z,a-z data ( = non English data like Chinese, French, Russian, Hebrew , insert any language here to the list that is not English or "special characters" like the € symbol) and the result is


For problems trying to insert "special" characters in Nchar, Nvarchar2 or Nclob (note the N) please see <note 276914.1> The National Character Set ( NLS_NCHAR_CHARACTERSET ) in Oracle 9i, 10g , 11g and 12c /  13)  I'm inserting <special character> in a Nchar or Nvarchar2 col but  it comes back as ?, ¿ or without accents when selected.



Changes can be many, new client installation, new database installation or simply trying to use a not used language before in an existing system with "normal" CHAR, VARCHAR2, LONG or CLOB column types.
This note provides a step by step approach to find out where the problem is and then how to correct it.


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