I am reaching out as I came across some posts on geonet and even though I have contacted ESRI support I am hoping for help in some way. In SDE Oracle 11g I had a feature database with some editable feature classes with attachments enabled, these also were published as map services and used in Collector App. However, when we upgraded to the new SDE oracle database,12 g, the feature classes were copied however the feature dataset was not. I need the feature dataset to be recreated as i have scripts using the feature dataset. If I try to create the feaure dataset with the original feature classes I will loose my existing attachments. Also in Collector the map services referencing the Feature Dataset are there but no attachments or ability to load attachments is possible as the original feature dataset and attach/rel tables are no longer in the feature dataset, even though they are in the SDE FGB. Is there any way to recreate the original feature dataset with the original feature classes and same attach/rel tables?