I had a quick look at the DBI documentation on CPAN here and searched on timeout, finding the following text: 
With Oracle for instance (DBD::Oracle), if the system which hosts the 
+database is down the DBI->connect() call will hang for several minute
+s before returning an error.

[download]
I guess this is happening in your case.

There is a suggested solution in the documentation.

In reply to Re: Trap DB Connect by rpanman
in thread Trap DB Connect by bitman

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