If you are absolutely sure that the two packages will not clash using the same instance of $dbh, you can do something similar to: 
package MyDbConnection;
use DBI;
#...
our $dbh;
sub get_dbh {
  unless $dbh {
    #real connection here
  }
  return $dbh;
}

[download]
...and the User and Company packages should call MyDbConnection::get_dbh()

In reply to Re: How can I avoid creating two instances of the same object by pajout
in thread How can I avoid creating two instances of the same object by beachguy82

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