You may want to take a look at this thread:

config.sh, as promised (Re: 64-bit Perl on SPARC Solaris)

By default Perl compiles as 32-bit so you will need to specifiy some changes when it prompts you for the compile config. The config.sh in the thread mentioned above should help you figure out the changes you need to make.

Also, my memory is really vague on this but you might want to compile without threading if you want it to work with Oracle. But as I said my memory is very vague on this so I could be wrong.