I have spent a week or so trying to get my head around upgrading from 3.4d to 4.2d and i'm not being very successful.
I have installed MySql 5.6 uploaded the alfresco tables I dumped from my 3.4d MySQL database.
I then installed Alfresco 4.2d but have been unsuccessful in getting Alfresco to correctly start after following all the upgrade instructions in the documentation and various blogs I have read