[xwiki-users] HTTP 500 Error : Unable to find Oracle hdm file

Hello, After installing Xwiki on my linux laptop without any problem, now i try to install it in my company. We use Websphere 6.1 and Oracle 10 When we deploy the standard WAR file (from the xwiki.org website) it goes ok but trying to reach the xwiki URL, we got an error message : Error 500: javax.servlet.ServletException: com.xpn.xwiki.XWikiException: 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 The xml file can be found in the core jar but does not seem to be found by the system. We tried to put some XML copies in other folders but without success. Thank you for your help Christophe