* Terry Riley
> Currently running 4.0.17 InnoDB on XP/Apache 2.0.47; client wants to
> investigate using capability for stored procs in v5, but doesn't have
> another machine on which to experiment. Can these two be run on the same
> machine (though not at the same time)?
You can run them on the same machine at the same time, just make sure they
don't listen on the same port, share the same pid-file, data files or log
files and so on.
<URL: http://www.mysql.com/doc/en/Multiple_servers.html >