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;

[download]

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.

In reply to Re^3: using tie on two arrays on IPC::Shareable makes array1 and array2 both same even though array2 is not updated. by ikegami
in thread using tie on two arrays on IPC::Shareable makes array1 and array2 both same even though array2 is not updated. by mr_p

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