Select statement with Unicode characters returns No Rows from a table with Oracle Text Index (Doc ID 1332215.1)

Last updated on JUNE 22, 2011

Applies to:

Oracle Text - Version: 10.2.0.5 to 11.2.0.2 - Release: 10.2 to 11.2
Information in this document applies to any platform.

Symptoms

Below Oracle Text query with umlaut characters returns "no rows" from a database with Unicode character set.

Running the query with divide symbol instead of umlautin the statement from SQL Developer returns "no rows":

SELECT * FROM info.DOKUMENT WHERE CONTAINS(DOKUMENT_BLOB,'Französisch') > 0;

no rows selected

Running the query with divide symbol instead of umlaut from SQL Developer returns many rows:

SELECT * FROM info.DOKUMENT WHERE CONTAINS(DOKUMENT_BLOB,'Franz÷sisch') > 0;

....


Cause

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