You can dereference the reference 
print %$err;

[download]

or, better, use Data::Dumper: 

use Data::Dumper;
print Dumper $err;

[download]
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^3: how to capture status codes of mongodb in perl by choroba
in thread how to capture status codes of mongodb in perl by praveenchappa

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