Mandeep Baruah wrote:
> (http://www.troubleshooters.com/codecorn/ruby/database/index.htm). 
> Finally I have used 'StandardError' successfully to rescue the 
> exception. Seems to be working now!.
> begin
>   res = @pgconn.exec(querystring) # some query
> rescue StandardError => e
>   puts e
> end

puts e.class.ancestors.inspect should give you a list of possible 
more-specific exceptions to capture.
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