[John Rogers]

Before I retired in 2009 I had been an Oracle DBA for over 13 years. I found that any Oracle product has huge amounts of "stuff" it can do, probably rivaled only by SAP. Combine the application rides on top of Oracle's database while being probably the best of the big 4, is also the most complicated to setup and run properly.

Having said that, I would suggest hiring an "implementer" to help do any conversions, setup reports and queries, tune the database and make sure that any new reports match exactly the old ones for results. While this is a $$$$$$$ issue, in the long run time and training are well worth it.