If I use antything other then 'data' like 'kala' I guess message as Could not create shared memory segment:

This is the exact Error message that I get.

Name "main::kids" used only once: possible typo at ./sharetest1.pl line 32. Name "main::handle2" used only once: possible typo at ./sharetest1.pl line 22. IPC::Shareable::SharedMem: shmget: No such file or directory at /nss/nfx/shmem/lib/lib/perl5/site_perl//5.8.5/IPC/Shareable.pm line 566 Could not create shared memory segment: at ./sharetest1.pl line 21

create defaults to false. You forget to actually pass the options to IPC::Shareable.

#!/usr/bin/perl -w

use strict;
use warnings;

use IPC::Shareable qw( );

my @array1;
my @array2;

my %options = (
    create    => 1,
    exclusive => 0,
    mode      => 0644,
    destroy   => 1,
);

my $handle1 = tie @array1, 'IPC::Shareable', 'data', \%options;
my $handle2 = tie @array2, 'IPC::Shareable', 'kala', \%options;
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You also seem to forgot to connect to the share in the children. It's not documented to be inheritable.

You might have a problem where the child destroys the share when it exits. That's why forked children should use POSIX::_exit. An alternative is to set destroy => 0 and call  IPC::Shareable->clean_up; before exiting the parent.