Just a thought:
You may need to replace this:
tie (my %hash, 'DB_File', $file, O_RDWR, 0600) || next;
with this:
tie (my %hash, 'DB_File', $file, O_RDWR, 0600, $DB_HASH) || next;
See DB_HASH of DB_File.
Update: The code shown is a fragment which does not compile. Please post a complete example if possible; or, at the least, indicate which line in the fragment shown is the line 66 referenced in the error message.
Plus minor edits.
HTH,
Athanasius <°(((>< contra mundum
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