Oracle command inside perl with SSH

[charith]

Hi All'

I need a execute oracle command on remote db server using perl and I try
with following but it not work. Can any one Suggest way to do this without
using DBI or any module.

===CODE=======
my $memp = qx{ssh -o stricthostkeychecking=no  $db_hosts "sqlplus -s
$db_string<<EOF
                show parameter memory;
                exit
                EOF"};
================

Thank you very much for your helps