FreeTDS Development Group

[Constantin Vasilyev <vasilyev AT ncbi.nlm.nih.gov>]

Hi All,


I'm a heavy user of FreeTDS. Normally I use Sybase::DBlib which works like a 
charm for me,
but this time I need to figure out how to deal with DBD::ODBC.

The problem I'm facing is - the ODBC driver doesn't seem to look into 
$SYBASE/interfaces (or ~/.interfaces) files.
It only takes in account freetds.conf files.

Also, it seems to ignore $TDSDUMPCONFIG environment variable. $TDSDUMP, 
however, works fine.

Is any of the above expected for DBD::ODBC, or its just me doing something 
wrong?



Here's the snippet of the code I'm using:

-------------------------------------------------------------------------------------------------------
> cat ~/tmp/dbi.pl 
#!/opt/perl-5.8.8/bin/perl                                                    
                                                                              
      

BEGIN {
   $ENV{'SYBASE'} = '/export/home/sybase/clients-mssql/freetds-0.82';
}

use strict;
use lib '/export/home/sybase/clients-mssql/freetds-0.82/perl';
use DBI;

my $dbh = 
DBI->connect('dbi:ODBC:driver=TDS;servername=MSSQLSERVER;database=test;app=dbi_test',
 'username', 'password') || die;
print "Ok";

-------------------------------------------------------------------------------------------------------


There's /export/home/sybase/clients-mssql/freetds-0.82/interfaces file which 
resolves MSSQLSERVER into valid server:port pair.
All Sybase::DBlib scripts I'm working with use that file just fine, but the 
ODBC driver doesn't.
I don't even see an attempt to open it in strace output:

> strace ~/tmp/dbi.pl 2>&1 | egrep 'interfaces|freetds.conf'
open("/home/vasilyev/.freetds.conf", O_RDONLY) = 3
open("/export/home/sybase/clients-mssql/freetds-0.82/etc/freetds.conf", 
O_RDONLY) = 3
read(3, "#   $Id: freetds.conf,v 1.12 200"..., 4096) = 1102
read(3, "#   $Id: freetds.conf,v 1.12 200"..., 4096) = 1102
> 

only ~/.freetds.conf and 
/export/home/sybase/clients-mssql/freetds-0.82/etc/freetds.conf are tried.



If I add something like:

[MSSQLSERVER]
      host = my_test_server
      port = 1433

into one of those freetds.conf files the script works "Ok", if not - it fails 
with this message:

> ./dbi.pl
DBI 
connect('driver=TDS;servername=MSSQLSERVER;database=test;app=dbi_test','username',...)
 failed: [unixODBC][FreeTDS][SQL Server]Unable to connect to data source 
(SQL-08001) at ./dbi.pl line 12
Died at ./dbi.pl line 12.
>


My attempts to set $TDSDUMPCONFIG environment variable didn't make any effect:

> TDSDUMPCONFIG=stdout ./dbi.pl
DBI 
connect('driver=TDS;servername=MSSQLSERVER;database=test;app=dbi_test','username',...)
 failed: [unixODBC][FreeTDS][SQL Server]Unable to connect to data source (S
QL-08001) at ./dbi.pl line 12
Died at ./dbi.pl line 12.
>

but $TDSDUMP works as expected:


> TDSDUMP=stdout ./dbi.pl
log.c:190:Starting log file for FreeTDS 0.82
        on 2011-03-30 22:53:36 with debug flags 0x4fff.
iconv.c:197:names for ISO-8859-1: ISO-8859-1
iconv.c:197:names for UTF-8: UTF-8
iconv.c:197:names for UCS-2LE: UCS-2LE
iconv.c:197:names for UCS-2BE: UCS-2BE
iconv.c:363:iconv to convert client-side data to the "UTF-8" character set
iconv.c:516:tds_iconv_info_init: converting "UTF-8"->"UCS-2LE"
iconv.c:516:tds_iconv_info_init: converting "ISO-8859-1"->"UCS-2LE"
login.c:405:IP address pointer is empty
login.c:407:Server MSSQLSERVER not found!
mem.c:563:tds_free_all_results()
error.c:574:SQLError((nil), 0x13e321e0, (nil), 0x7fff7d63aae0, 
0x7fff7d637e64, 0x7fff7d63a650, 513, 0x7fff7d637e6e)
error.c:510:_SQLGetDiagRec(2, 0x13e321e0, 1, 0x7fff7d63aae0, 0x7fff7d637e64, 
0x7fff7d63a650, 513, 0x7fff7d637e6e)
error.c:574:SQLError((nil), 0x13e321e0, (nil), 0x7fff7d63aae0, 
0x7fff7d637e64, 0x7fff7d63a650, 513, 0x7fff7d637e6e)
error.c:510:_SQLGetDiagRec(2, 0x13e321e0, 1, 0x7fff7d63aae0, 0x7fff7d637e64, 
0x7fff7d63a650, 513, 0x7fff7d637e6e)
odbc.c:3680:SQLFreeHandle(2, 0x0x13e321e0)
odbc.c:3706:_SQLFreeConnect(0x13e321e0)
odbc.c:3680:SQLFreeHandle(1, 0x0x13c70e80)
odbc.c:3744:_SQLFreeEnv(0x13c70e80)
DBI 
connect('driver=TDS;servername=MSSQLSERVER;database=test;app=dbi_test','username',...)
 failed: [unixODBC][FreeTDS][SQL Server]Unable to connect to data source 
(SQL-08001) at ./dbi.pl line 12
Died at ./dbi.pl line 12.



That all seems quite strange  ...

And, almost forgot to mention, I'm running 0.82 stable.


Thanks for reading this and for any suggestions,



Constantin Vasilyev