Mounting your swap on a different hard drive would probably speed up the boot process. This is actually a good process to do anyway, because having virtual memory on a drive that's constantly being used just slows everything down.
A RAID might be a good idea, but if that ORACLE information is critical, then redundancy is probably required. If you had enough disks, a RAID 0+1 would be handy. If not, maybe RAID 5.
Depending on how much memory you have in that system, you may not even need a large swap file.