[Exim] DBI-Perl-Exim questions...

I currently have a perl program that I was asked to investigate porting to
use the internal perl interpreter of exim.

Some questions....

1. The DBI->connect statement only has to be done once?
2. The DBI->prepare statement can be called only once and be used by many
processes?
3. What if the database looses connection?
4. Are there any known memory leaks?
5. Is the memory shared?

-spencer p.