Re: SQLGetData() returns len 4095 for empty TEXT on AIX 6.1 without ClientCharset defined

Can I have access to one of the AIX machines ??

I'm currently on holidays, I'll be back on Thursday.

Frediano

2013/3/20 Sebastien FLAESCH <[email protected]>:
> Oups! my mistake in the link options, but it does not fix it:
>
> comp@zebulon:/tmp$ cat comp.sh
> xlc -O2 -qmaxmem=8192 -q64 \
>    -I/dbs/64bits/uxo/2.3.1/include\
>    -o odbctest2.bin odbctest2.c\
>    -L/dbs/64bits/tds/0.92.549/lib -ltdsodbc
>
> comp@zebulon:/tmp$ sh comp.sh
>
> comp@zebulon:/tmp$ export LIBPATH=/dbs/64bits/tds/0.92.549/lib
> (like LD_LIBRARY_PATH, to overwrite lib path used at link time)
>
> comp@zebulon:/tmp$ slibclean
> (unloads shared libs from memory to be sure)
>
> comp@zebulon:/tmp$ ./odbctest2.bin
> num cols: 2
> fetch 1: rows fetched = 1
> get data 1: len = 4095
>
> comp@zebulon:/tmp$ dump -X64 -H ./odbctest2.bin
>
> ./odbctest2.bin:
>
>                          ***Loader Section***
>                        Loader Header Information
> VERSION#         #SYMtableENT     #RELOCent        LENidSTR
> 0x00000001       0x00000019       0x00000023       0x00000069
>
> #IMPfilID        OFFidSTR         LENstrTBL        OFFstrTBL
> 0x00000003       0x000004c0       0x00000169       0x00000529
>
>
>                          ***Import File Strings***
> INDEX  PATH                          BASE                MEMBER
> 0      /dbs/64bits/tds/0.92.549/lib:/usr/vac/lib:/usr/lib:/lib
> 1                                    libc.a              shr_64.o
> 2                                    libtdsodbc.a        libtdsodbc.so.0
>
> On 03/20/2013 06:28 PM, Frediano Ziglio wrote:
>> 2013/3/19 Sebastien FLAESCH<[email protected]>:
>>> I still have the same problem with the version 0.92.549:
>>>
>>> $ xlc -O2 -qmaxmem=8192 -q64 -I/dbs/64bits/uxo/2.3.1/include -o odbctest2.bin odbctest2.c -L/dbs/64bits/tds/0.83/lib -ltdsodbc
>>>
>>
>> 0.83 ??
>>
>>> $ file odbctest2.bin
>>> odbctest2.bin: 64-bit XCOFF executable or object module not stripped
>>>
>>> $ echo $LIBPATH
>>> /dbs/64bits/tds/0.92.549/lib
>>>
>>
>> Is this used to override libraries ?
>>
>>> $ slibclean
>>>
>>> $ ./odbctest2.bin
>>> num cols: 2
>>> fetch 1: rows fetched = 1
>>> get data 1: len = 4095
>>>
>>>
>>> Seb
>>>
>>
>> Mmm... could I have access (I don't need root) to a machine?
>>
>> Frediano
>>
>>> On 03/19/2013 12:28 PM, Sebastien FLAESCH wrote:
>>>> Sorry I mixed "current" and "dev" version.
>>>> I will try 0.92.549.
>>>> Seb
>>>>
>>>> On 03/19/2013 12:10 PM, Frediano Ziglio wrote:
>>>>> Last version in the directory is 0.92.549.
>>>>>
>>>>> I downloaded the file and checked that configure.ac, configure and
>>>>> freetds.spec contains the correct version and it's ok.
>>>>>
>>>>> Frediano
>>>>>
>>>>> 2013/3/19 Sebastien FLAESCH<[email protected]>:
>>>>>> Thank you Frediano.
>>>>>>
>>>>>> I am already using version 0.92.377!  Are there changes committed
>>>>>> and are sources published, without increasing the version number?
>>>>>>
>>>>>> What AIX version are you using? We have an AIX 6.1...
>>>>>>
>>>>>> Seb
>>>>>>
>>>>>> On 03/19/2013 10:32 AM, Frediano Ziglio wrote:
>>>>>>> Probably is broken the link creation, I never noted the problem.
>>>>>>> However loot at ftp://ftp.freetds.org/pub/freetds/current/
>>>>>>>
>>>>>>> Frediano
>>>>>>>
>>>>>>> 2013/3/19 Sebastien FLAESCH<[email protected]>:
>>>>>>>> On 03/18/2013 11:35 PM, Frediano Ziglio wrote:
>>>>>>>>> Have you tried this with a newer FreeTDS version ??
>>>>>>>>
>>>>>>>> What is the the version number of the "newer version?
>>>>>>>> Where can I get it?
>>>>>>>> Here?
>>>>>>>> ftp://ftp.freetds.org/pub/freetds/current/freetds-current.tgz
>>>>>>>>
>>>>>>>>> It works for me. Unexpectedly it returns data even after a
>>>>>>>>> SQLMoreResults. Did you try with MS drivers?
>>>>>>>>
>>>>>>>> I did not try the little sample I have sent, but I use the same
>>>>>>>> code with SQL Native Client, with the same regression test, and
>>>>>>>> I get the expected length of zero.
>>>>>>>>
>>>>>>>> Tx
>>>>>>>> Seb
>>>>>>>>
>>>>>>>>> Frediano
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> 2013/3/18 Sebastien FLAESCH<[email protected]>:
>>>>>>>>>> Ok, once again ;-)
>>>>>>>>>>
>>>>>>>>>> Attached the little sample to reproduce.
>>>>>>>>>>
>>>>>>>>>> I fact, I use column-wise binding, but when LOB columns need to be
>>>>>>>>>> fetched, I use an array size of 1. It may look strange, but I have
>>>>>>>>>> to write generic code, to execute SQL statements that are not known
>>>>>>>>>> at compile time.
>>>>>>>>>>
>>>>>>>>>> Compilation command used:
>>>>>>>>>>
>>>>>>>>>> xlc -O2 -qmaxmem=8192 -q64 -I/dbs/64bits/uxo/2.3.1/include
>>>>>>>>>>          -o odbctest2.bin odbctest2.c
>>>>>>>>>>          -L/dbs/64bits/tds/0.83/lib -ltdsodbc
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I think you keep 0.83 for compatibility.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> ODBC source:
>>>>>>>>>>
>>>>>>>>>> [ftm_msvtest1_cobra]
>>>>>>>>>> Description     = SQL Server 2012
>>>>>>>>>> Trace           = No
>>>>>>>>>> Server          = cobra
>>>>>>>>>> Database        = msvtest1
>>>>>>>>>> Port            = 1680
>>>>>>>>>> TDS_Version     = 8.0
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> You can use 7.1 here.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Output on the Linux 32b machine:
>>>>>>>>>>
>>>>>>>>>> num cols: 2
>>>>>>>>>> fetch 1: rows fetched = 1
>>>>>>>>>> get data 1: len = 0
>>>>>>>>>>
>>>>>>>>>> Output on the AIX 6.1 machine:
>>>>>>>>>>
>>>>>>>>>> num cols: 2
>>>>>>>>>> fetch 1: rows fetched = 1
>>>>>>>>>> get data 1: len = 4095
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Maybe this can help:
>>>>>>>>>>
>>>>>>>>>> When I set a (valid) ClientCharset like ISO8859-15 or UTF-8, I get the
>>>>>>>>>> unexpected length of 4095, but with an invalid ClientCharset, I get zero.
>>>>>>>>>>
>>>>>>>>>> !!! The length returned by SQLGetData() is in fact the size of the buffer
>>>>>>>>>> provided, minus one...
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> (sorry for the confusion)
>>>>>>>>>> Seb
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 03/18/2013 10:25 AM, Sebastien FLAESCH wrote:
>>>>>>>>>>>
>>>>>>>>>>> Sorry:
>>>>>>>>>>>
>>>>>>>>>>> After a closer look I don't use column-wise binding if a text/byte
>>>>>>>>>>> column is in the result set.
>>>>>>>>>>>
>>>>>>>>>>> Seb
>>>>>>>>>>>
>>>>>>>>>>> On 03/18/2013 10:04 AM, Sebastien FLAESCH wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> OK.
>>>>>>>>>>>>
>>>>>>>>>>>> FYI, I am using column-wise binding with:
>>>>>>>>>>>>
>>>>>>>>>>>>             rcode = SQLSetStmtAttr(m_hstmt_2, SQL_ATTR_ROW_BIND_TYPE,
>>>>>>>>>>>>                                    (SQLPOINTER) SQL_BIND_BY_COLUMN,
>>>>>>>>>>>> SQL_IS_UINTEGER);
>>>>>>>>>>>>
>>>>>>>>>>>>             rcode = SQLSetStmtAttr(m_hstmt_2, SQL_ATTR_ROW_ARRAY_SIZE,
>>>>>>>>>>>>                                    (SQLPOINTER) ARRAY_SIZE, SQL_IS_UINTEGER);
>>>>>>>>>>>>
>>>>>>>>>>>>             rcode = SQLSetStmtAttr(m_hstmt_2, SQL_ATTR_ROWS_FETCHED_PTR,
>>>>>>>>>>>>                                    (SQLPOINTER)&        (nrows), SQL_IS_UINTEGER);
>>>>>>>>>>>>
>>>>>>>>>>>> I will try to reproduce with a small sample.
>>>>>>>>>>>>
>>>>>>>>>>>> Seb
>>>>>>>>>>>>
>>>>>>>>>>>> On 03/16/2013 03:04 PM, Frediano Ziglio wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>> 2013/3/14 Sebastien FLAESCH<[email protected]>:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I have already reported an issue regarding SQLGetData()/iconv, see
>>>>>>>>>>>>>> mails with title:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> "SQLGetData() returns TEXT length minus one on Solaris 64b with SQL
>>>>>>>>>>>>>> Server 2005"
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> But now we have a similar problem on AIX 6.1, still with version
>>>>>>>>>>>>>> 0.92.377.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> After inserting an empty TEXT, we fetch it back (see mail history for
>>>>>>>>>>>>>> details),
>>>>>>>>>>>>>> and SQLGetData() returns a len of 4095 bytes, when zero is expected.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> I downloaded 0.92.377, forced indirect conversion and checked
>>>>>>>>>>>>> SQLGetData with empty text (there is also a spcific test in getdata
>>>>>>>>>>>>> test but I enhanced it) but unfortunately was not able to reproduce
>>>>>>>>>>>>> your result (getting 4095 for an empty string). Could you help repro
>>>>>>>>>>>>> the case? Or I didn't understand your problem?
>>>>>>>>>>>>>
>>>>>>>>>>>>>> This occurs if no ClientCharset is defined in the ODBC data source...
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> When setting:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>             ClientCharset = en_US.8859-15
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> or:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>             ClientCharset = en_US.UTF-8
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> The len returned by SQLGetData() is zero, as expected.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Some news about this?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> As I suggested, if there is some iconv conversion issues, FreeTDS
>>>>>>>>>>>>>> should stop
>>>>>>>>>>>>>> with a fatal error, to avoid any data loss / mis-conversion. It should
>>>>>>>>>>>>>> not
>>>>>>>>>>>>>> silently send or return invalid character data.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Seb
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> Mmm... from my log
>>>>>>>>>>>>>
>>>>>>>>>>>>> 13:44:19.515397 (token.c:321):looking for login token, got  ad(LOGINACK)
>>>>>>>>>>>>> 13:44:19.515401 (token.c:357):server reports TDS version 71.0.0.1
>>>>>>>>>>>>> 13:44:19.515404 (token.c:359):Product name for 0x71000001 is 2000 SP1
>>>>>>>>>>>>> 13:44:19.515409 (token.c:391):Product version 89001388
>>>>>>>>>>>>> 13:44:19.515413 (token.c:321):looking for login token, got
>>>>>>>>>>>>> e3(ENVCHANGE)
>>>>>>>>>>>>> 13:44:19.515417 (token.c:107):tds_process_default_tokens() marker is
>>>>>>>>>>>>> e3(ENVCHANGE)
>>>>>>>>>>>>> 13:44:19.515422 (token.c:2045):changing block size from 4096 to 4096
>>>>>>>>>>>>> 13:44:19.515426 (token.c:321):looking for login token, got  fd(DONE)
>>>>>>>>>>>>> 13:44:19.515430 (token.c:107):tds_process_default_tokens() marker is
>>>>>>>>>>>>> fd(DONE)
>>>>>>>>>>>>> 13:44:19.515435 (token.c:1905):tds_process_end: more_results = 0
>>>>>>>>>>>>>                         was_cancelled = 0
>>>>>>>>>>>>>                         error = 0
>>>>>>>>>>>>>                         done_count_valid = 0
>>>>>>>>>>>>> 13:44:19.515440 (token.c:1921):                rows_affected = 0
>>>>>>>>>>>>> 13:44:19.515443 (token.c:1924):tds_process_end() state set to TDS_IDLE
>>>>>>>>>>>>> 13:44:19.515448 (token.c:423):tds_process_login_tokens() returning
>>>>>>>>>>>>> TDS_SUCCESS
>>>>>>>>>>>>> 13:44:19.515467 (iconv.c:967):tds_iconv_get: what is charset
>>>>>>>>>>>>> "en_US.8859-15"?
>>>>>>>>>>>>> 13:44:19.515475 (odbc.c:1723):SQLAllocStmt(0x207f380, 0x606de0)
>>>>>>>>>>>>> 13:44:19.515479 (odbc.c:1621):_SQLAllocStmt(0x207f380, 0x606de0)
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> As you reported another charset is silently used. Also strangely seems
>>>>>>>>>>>>> that client charset is readed after the login. Oh, probably cause is
>>>>>>>>>>>>> used only to convert data as now wide is the default and UTF-8 is used
>>>>>>>>>>>>> in libTDS. Yes, that is, disabling wide cause connection to fail using
>>>>>>>>>>>>> an invalid charset! So this is a regression of wide support in odbc.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Frediano
>>>>>>>>> _______________________________________________
>>>>>>>>> FreeTDS mailing list
>>>>>>>>> [email protected]
>>>>>>>>> http://lists.ibiblio.org/mailman/listinfo/freetds
>>>>>>>>>
>>>>>>>>
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>>>>>>
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