deep submerge,
Chances you are not using DB_File. 
#!/usr/bin/perl
use strict;
use warnings;

use DB_File;  # This line is really important
tie my %HASH, 'DB_File', 'file' or die $!;

[download]
If that still gives you the same error than it means you likely typo'd it as pointed out by BrowserUk.

Cheers - L~R

Minor update to give credit to BrowserUk for other possibility

In reply to Re: Can't locate TIEHASH by Limbic~Region
in thread Can't locate TIEHASH by deep submerge

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