Re: [cx-oracle-users] Unicode support

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Hmm, do you have access to a database with a server side fixed width
character set? If not, I'll have to try creating a database with a
variable width character set like UTF8 and try it -- but my time is
stretched right now so it will have to wait if you want me to look
into it. :-)

Anthony

On Thu, Oct 2, 2008 at 10:50 AM, Sébastien Sablé
<sa...@us...> wrote:
> Hi Anthony,
>
> I use a 10.2.0.1.0 client on linux, connecting to a 10.2.0.3.0 server on
> sunos 10.
>
> Here are the parameters in my database:
>
> $ sqlplus SSA_UTF8/sungard@UTF102NP
>
> SQL*Plus: Release 10.2.0.1.0 - Production on Thu Oct 2 18:38:43 2008
>
> Copyright (c) 1982, 2005, Oracle.  All rights reserved.
>
>
> Connected to:
> Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
> With the Partitioning, OLAP and Data Mining options
>
> SQL> select * from nls_database_parameters where instr(parameter,
> 'CHARACTERSET') != 0;
>   2
> PARAMETER
> ------------------------------
> VALUE
> --------------------------------------------------------------------------------
> NLS_CHARACTERSET
> UTF8
>
> NLS_NCHAR_CHARACTERSET
> UTF8
>
>
> So this may be linked to the different charset being used.
> regards
>
> --
> Sébastien Sablé
>
>
> Anthony Tuininga a écrit :
>> Hi,
>>
>> I tried the code you provided as is and it worked for me. :-) I
>> checked the error message and the cause claims to be that you cannot
>> use OCI_ATTR_CHAR_COUNT when the server or client character set is
>> variable length. I was using a fixed length character set so I tried a
>> variable length character set but I still didn't get an error. I am
>> using the Oracle 10.2.0.3 instant client on Windows and the full
>> Oracle 11.1.0.6 client on Linux. Neither of these seem to have any
>> difficulty. Can anyone else tell me if they are getting the same
>> behavior? Please specify the Oracle client being used and the value
>> for connection.encoding and connection.encoding as well as the results
>> of
>>
>> select * from nls_database_parameters where instr(parameter,
>> 'CHARACTERSET') != 0;
>>
>> For example, with the Windows instant client:
>>
>> Oracle Instant client version 10.2.0.3
>> connection.encoding = "WINDOWS-1252"
>> connection.nencoding = "WINDOWS-1252"
>>
>> PARAMETER                      VALUE
>> ------------------------------ ----------------------------------------
>> NLS_NCHAR_CHARACTERSET         AL16UTF16
>> NLS_CHARACTERSET               WE8MSWIN1252
>>
>> Anthony
>>
>> On Thu, Oct 2, 2008 at 6:55 AM, Sébastien Sablé
>> <sa...@us...> wrote:
>>> Hi Anthony,
>>>
>>> thank you for this evolution of cx_Oracle!
>>>
>>> It tested it and it seems to work fine for output, however when doing
>>> some input I always get the same kind of error:
>>>
>>> $ python test_oracle.py
>>> Traceback (most recent call last):
>>>   File "test_oracle.py", line 18, in <module>
>>>     cursor.execute('insert into personne values(:0, :1)', [u'abc', u'def'])
>>> cx_Oracle.DatabaseError: ORA-24363: measurements in characters illegal here
>>>
>>> Here is the trivial test I ran:
>>>
>>> import cx_Oracle
>>>
>>> def OutputTypeHandler(cursor, name, defaultType, size, precision, scale):
>>>     if defaultType in (cx_Oracle.STRING, cx_Oracle.FIXED_CHAR):
>>>         return cursor.var(unicode, size, cursor.arraysize)
>>>
>>> connection = cx_Oracle.Connection('SSA_UTF8/sungard@UTF102NP')
>>> connection.outputtypehandler = OutputTypeHandler
>>> cursor = connection.cursor()
>>>
>>> try:
>>>     cursor.execute('drop table personne')
>>> except cx_Oracle.DatabaseError:
>>>     pass
>>>
>>> cursor.execute('create table personne (name nchar(4), first_name nchar(6))')
>>>
>>> cursor.execute('insert into personne values(:0, :1)', [u'abc', u'def'])
>>>
>>> cursor.execute("select * from personne")
>>> for row in cursor:
>>>     print "Row:", row
>>>
>>>
>>>
>>> Is there something to configure in order to allow unicode strings input?
>>> Thanks in advance
>>>
>>> --
>>> Sébastien Sablé
>>>
>>>
>>> Anthony Tuininga a écrit :
>>>> All,
>>>>
>>>> I just checked in to Subversion support for Unicode. Thanks go to
>>>> Amaury Forgeot d'Arc for the patch he provided earlier this year and
>>>> to everyone else for their patience. :-) Since I have little
>>>> experience with languages other than English and I only have access to
>>>> little endian machines I'd appreciate those of you with such
>>>> experience or machines to test the new code for me and let me know the
>>>> results.
>>>>
>>>> Note that now nchar, nvarchar2 data are now returned as unicode. It is
>>>> also possible to bind unicode strings in to cursors. SQL statements
>>>> and varchar2 and char data are still returned as encoded strings. Note
>>>> that with another new feature in cx_Oracle you can force all strings
>>>> to be returned as unicode if you so desire. Below is an example that
>>>> will run with the data in the test suite:
>>>>
>>>> import cx_Oracle
>>>>
>>>> def OutputTypeHandler(cursor, name, defaultType, size, precision, scale):
>>>>     if defaultType in (cx_Oracle.STRING, cx_Oracle.FIXED_CHAR):
>>>>         return cursor.var(unicode, size, cursor.arraysize)
>>>>
>>>> connection = cx_Oracle.Connection("cx_Oracle/dev@eadev")
>>>> connection.outputtypehandler = OutputTypeHandler
>>>> cursor = connection.cursor()
>>>> cursor.execute("select * from teststrings")
>>>> for row in cursor:
>>>>     print "Row:", row
>>>>
>>>> If you have questions, let me know. If you have feedback, please
>>>> provide it. Thanks.
>>>>
>>>> Anthony
>>>>
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