Database does not contain duplicated records, so fetchrow_array() returns all data. Here is my test-case program for current situation:

#!/usr/bin/perl -w

use strict;
use DBI;
use Data::Dumper;
use Storable;
use warnings;

sub get_session {
    my ($dbh) = shift;
    #$dbh->{TraceLevel} = 2;
    my $sid = $ARGV[0];
    my $SQL = sprintf("select a_session from sessions where id = %s", 
+$dbh->quote($sid));
    my $sth = $dbh->prepare_cached($SQL, undef, 3);
    $sth->execute;
    my ($val) = $sth->fetchrow_array;
    #[1] my ($val2) = $sth->fetchrow_array;
    #[2] $sth->finish;
    my $session = Storable::thaw($val);
}


my $dbh = DBI->connect('dbi:SQLite:dbname=db/sessions.db');
print Dumper(get_session($dbh));
$dbh->disconnect;
[download]

If we run program as it looks, result will be:

DBI::db=HASH(0x87a79c)->disconnect invalidates 1 active statement hand
+le (either destroy statement handles or call finish on them before di
+sconnecting) at ./decode_sessions.pl line 26.
closing dbh with active statement handles at ./decode_sessions.pl line
+ 26.
[download]

If I uncomment (1), (2) or (1)+(2) result:

closing dbh with active statement handles at ./decode_sessions.pl line
+ 26.
[download]

PS. I have found that something like this already in CPAN bug list: http://rt.cpan.org/Public/Bug/Display.html?id=31239

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