This is the failing line: $hsh{"$Sdatabase"} = $dbh;

A database handle is a complex thing. It may reference file components and external library resources. They can't be shared. (The specific violation is that $dbh is a reference, but it doesn't reference something shared.)

Create the database handle in the thread that will use it.

In reply to Re: threads::shared referencing confusion by ikegami
in thread threads::shared referencing confusion by Anonymous Monk

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