I am trying to use the Define Projection tool and a feature class in an enterprise geodatabase. I am receiving an error that it can't create a projection file (ERROR 000054). I have confirmed there is no locks on the table, the user logged in is the owner of the table and has db owner on the database. I am using a standard license. I've tried in both Pro and ArcCatalog (10.5.1). I've tried several tables with the same result. Is there security I am missing? Can there not be any locks on any table/view in the database while running the tool?