We have a 7.1.8 application that is currently hosted on Oracle. Customer wants to migrate this as-is to PostGreSQL, keeping the existing App Server. After scanning PDN for a couple of days it doesn't look too hard once you get past creating the DDL to build the user tables - using Data Migration Helper. Are there any papers that explain pitfalls people meet? Or can anyone who has already done this let us know what issues they ran into?