# code of myModule
use strict;
use warnings;
use diagnostics;

package myModule;

# sub routine one for generating HTML content
# sub routine two for generating HTML content

# sub routine third for database content
# some of its code
# database disconnection
$dbh->disconnect;

1;

##</code><code>##

This is apache error log:[Sun Feb 16 23:16:59 2014] [error] [client 127.0.0.1] [Sun Feb 16 23:16:59 2014] validate.pl: DBI::db=HASH(0x164d9fc)->disconnect invalidates 1 active statement handle (either destroy statement handles or call finish on them before disconnecting) at D:\\websites\\One\\cgi-bin/Epanvel.pm line 466., referer: http://localhost/cgi-bin/validate.pl