17.4 Upgrade - 4055 error

Question

After an upgrade to 17.4, we are unable to verify one of our datastores. We are receiving this error: A type mapping annotation is invalid: Could not parse mapping document from string XML String (InvalidMappingException) (APNX-2-4055-000). 
 Server log doesn't say much different: 
 21:01:58,657 INFO [stdout] (http-/0.0.0.0:8080-2) Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from string XML String 21:01:58,657 INFO [stdout] (http-/0.0.0.0:8080-2) at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3982) 
 
 There are no changes to this datastore and I have confirmed the oracle driver and module.xml are in place. I could not find a KB for this error. Any ideas on what to check? or what I might be overlooking? 
 
 Any suggestions appreciated!!!

ChristineH · Accepted Answer

Found the issue. Since we are using oracle, we needed to update the teneo.properties to ignore the case that Appian is looking for. This file was not migrated over. So after moving over, this issue was resolved.