New answers tagged arccatalog
Try right clicking on the feature class then clicking on manage, then locks, and try disconnecting the user.
This documentation gives a pretty good description of what each node is for, and it confirms what you mentioned. The Database Server node is for creating the geodatabase and administrative tasks (for SQL Server Express), and the Database Connection node is for creating/editing/viewing data. A quick tour of setting up and using database servers Anyone ...
My experience has been that the Database Server node is explicitly for use of connecting to spatially enabled "Express" editions of RDBMS where as the Database Connection Node is used to conect to Enterprise RDBMS like SQL or Oracle (spatially enabled or not). What are Database Servers Quick Tour of Administering SDE gdbs
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