I ran a diff and found only cosmetic changes. However, I pulled that copy
 down and replaced mine to guarantee I had the most up to date one. Nothing
 changed. I still got:
 HTTP ERROR: 500
 Error number 3 in 0: Could not initialize main XWiki context
 Wrapped Exception: Error number 3001 in 3: Cannot load class
 com.xpn.xwiki.store.migration.hibernate.XWikiHibernateMigrationManager from
 param xwiki.store.migration.manager.class
 Wrapped Exception: Error number 0 in 3: Exception while hibernate execute
 Wrapped Exception: Could not parse mapping document from resource
 xwiki.oracle.hbm.xml
 I am not the only one that has seen this problem. I found another posting
 similar to mine:
http://n2.nabble.com/Problems-with-Xwiki-Enterprise-1.8-on-Oracle---get-Err…
 It didn't have a resolution as well.
 If there are more details needed to help my situation please let me know and
 I will provide any information I can.
  
Can you send the root error message (and the associated stacktrace)?
--
Sergiu Dumitriu