Am trying to backup a mysql database and replace the existing file. am using this module

MySQL::Backup

but its not working. am getting the following errors, tho i don't have much idea on it and its documentation is not clear

Use of uninitialized value $null in concatenation (.) or string at MySQL/Backup.pm line 103.: File name too long at db_backup.pl line 28. 
#!/usr/bin/perl -wT

use lib '.';
use strict;
use warnings;
use MySQL::Backup;
use File::Basename;
use CGI qw/:standard/;


my $host = "162db.myhost.org";
my $user = "user";
my $pwd  = "password";
my $database = "dbusers";
my $backup_folder = '/usr/home/ken/public_html/srcoc';


my $mb = new MySQL::Backup($database,$host,$user,$pwd,{'USE_REPLACE' =
+> 0, 'SHOW_TABLE_NAMES' => 0});
$mb->create_structure();
my $backup_db = $mb->data_backup();

my $file = $backup_db;
$file .= ".sql";

if ($backup_db) {
open ( UPLOADFILE, "+>$backup_folder/$file" ) or die "$!";
binmode UPLOADFILE;

while ( <UPLOADFILE> )
{
print UPLOADFILE;
}

close UPLOADFILE;
}
else {
  exit 1;
}

[download]

In reply to backuping mysql by frank1

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.