It looks like it uses webdav details for the content repositories. If you want to access alfresco repository as webdav, you can access it as following - http://hostnameort/alfresco/webdav. Give user credentials when accessing it and you will be able to access alfresco repository through webdav in your browser. Looking at the link you provided - Webdav URL should be - http://hostnameort/alfresco/webdav On Repository Confirmation page, give the alfresco user credentials.
I hope you are trying the similar way and providing correct user credentials to access the repository. Also, just a note that I have not tried connecting Alfresco and Oracle EBS. However, Hope this information helps you to proceed further.