foreach $key (keys %key_hash) {
    print "KEY: $key\n";
    print "MIN_TIME_DIFF: $key_hash{$key}{Min_Time_Diff}\n";
    print "MAX_TIME_DIFF: $key_hash{$key}{Max_Time_Diff}\n";
    print "ERROR STATUS: $key_hash{$key}{Error_Status}\n";
    foreach my $value (%{$key_hash{$key}}) {
    print "VALUE: $value\n";
    }
}
[download]

KEY: response_1.3.6.1.2.1.2.2.1.12.27
MIN_TIME_DIFF: 1:00:00.0000
MAX_TIME_DIFF: 1:00:00.0000
ERROR STATUS: No error
VALUE: 1.3.6.1.2.1.2.2.1.15.28
VALUE: ARRAY(0x1e47028)
VALUE: 1.3.6.1.2.1.2.2.1.15.27
VALUE: ARRAY(0x1e49fc8)
VALUE: 1.3.6.1.2.1.2.2.1.11.27
VALUE: ARRAY(0x1e49fd8)
[download]

Try this:

    foreach my $value (%{$key_hash{$key}}) {
        if (UNIVERSAL::isa($value, 'ARRAY'))
        {
            print "VALUE: @$value\n";
        }
        else
        {
            print "VALUE: $value\n";
        }
    }
[download]

------
We are the carpenters and bricklayers of the Information Age.

Don't go borrowing trouble. For programmers, this means Worry only about what you need to implement.

Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.