Revered monks,

I come to you in a time of great need. I've inherited a web application running on Apache on a Windows server. It uses DBD::ODBC to connect to a Microsoft SQL Server.

I'm now working on transitioning the thing over to a Linux machine using FreeTDS through DBD::ODBC.

The problem I'm facing is that there seems to be a difference in implementation which boils down to this:

#!/usr/bin/perl

use strict;
use warnings;
use DBI;

our $db = DBI->connect('dbi:ODBC:DATABASE', 'USER', 'PASSWORD',
  { RaiseError => 1, AutoCommit => 1 }
);

my $test=$db->prepare("select getdate()") or die($!);
$test->execute();
print $test->fetchrow_array();

my $test2=$db->prepare("select getdate()") or die($!);
$test2->execute();
print $test2->fetchrow_array();

[download]

On the Windows system I get the expected output (the date twice). On the Linux machine I get:

DBD::ODBC::st execute failed: unixODBCFreeTDSSQL ServerInvalid cursor state (SQL-24000) at testpm.cgi line 17.

twice. Line 17 is the second execute line. I get the output from the first statement but the script dies when reaching the second execute.

Now, for me this boils down to two questions:

  1. Is it a bad idea not to use a loop to fetch all data from a handle even if you know beyond reasonable doubt that there isn't any more? Meaning: Should I start rewriting the places where this occurs?
  2. Might this be a bug in FreeTDS that's worth reporting?

Thanks for your time.

Dennis

In reply to FreeTDS (Linux) vs. SQLSRV32.dll (Windows) via ODBC by pvbcharon

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