Re: Trouble with DBI - bug or rewrite?

"Martin J. Evans" <[email protected]> Wed, 18 Sep 2013 10:26:08 +0100
Newsgroups	gmane.comp.lang.perl.modules.dbi.general
Message-ID	<[email protected]>
On 18/09/13 09:58, Michael Seaton wrote:
> Hi there,
>
> I and a colleague have been trying to install Koha (an integrated
> library system written in Perl) onto a server. While we've been mostly
> successful in installing Koha, we keep getting the following message
> whenever we try to log in:
>
> Can't use an undefined value as an ARRAY reference at
> /usr/local/lib64/perl5/DBI.pm line 2059.
>
> While it might be possible to blame Koha for this error message, I
> understand that it is only comparatively recently that this message
> has started to appear ... and not just for Koha. The same error
> message (referring to the same line in DBI.pm) has also recently been
> reported for another program (Netdisco), as the following links to
> discussion boards/blogs show:
>
> http://sourceforge.net/mailarchive/message.php?msg_id=30768434
>
> http://netdisco.blogspot.co.uk/2013/04/manual-netdisco-installation.html
>
> My question is: has there been a recent rewrite of DBI.pm that the
> developers of Koha (and Netdisco) have yet to account for, or is the
> above error message the result of a bug in DBI.pm?
>
> I'd very much appreciate any advice or information anyone can offer on
> this. (Many apologies if someone else has already posted on this
> topic!)
>
> Regards,
>
> Michael Seaton
>

Hi,

It might help to know what version of DBI you are using. I see from the first link you gave, it looks like someone getting this issue is using DBI 1.625 and line 2059 is in the middle of the fetchall_arrayref method.

I see in the Change log for 1.620:

=head2 Changes in DBI 1.620 (svn r15300) 25th April 2012

   Modified column renaming in fetchall_arrayref, added in 1.619,
     to work on column index numbers not names (an incompatible change).
   Reworked the fetchall_arrayref documentation.
   Hash slices in fetchall_arrayref now detect invalid column names.

I vaguely recollect this change. Does 1.619 work for you? Can you find the code which called fetchall_arrayref and show us it as I don't use Koha.

Martin