i have installed arcgis 10.3 and connected with oracle with a direct connection.
i am able to create feature class and on top of that i am able to perform all feature class operations.
but while creating a feature dataset it throws a error.and doesnt create feature dataset.
am i missing something in configuration ? !
Thank you for the screen capture!
This explains why you cannot create a feature dataset. You are working with an Oracle database with NO geodatabase in it. A feature class is nothing but a table with spatial column in it however feature dataset is a logical geodatabase entity which requires you to have geodatabase enabled in order to create/use feature dataset.
You can create feature classes in this Oracle database with SDO_GEOMETRY storage type (Oracle spatial) or ST_GEOMETRY storage type if you have added it using following tool:
However if you would like to take advantage of geodatabase functionalities like feature dataset, topology, geometric network, multi-user editing etc you will have to run 'Enable Enterprise Geodatabase' tool against this Oracle database:
You can read more about this here:
Hope this helps!