After restoring some old geodatabases to my new configuration, 10.3.1 on Windows Server 2012 R2 64, SQL Server 2012, a couple months ago, I noticed that the database properties were still set to version 9.3.1. I went through ArcCatalog>Update geodatabase to bring them up to the current version. Except one wouldn't update. Says it can't update because there is another open connection. I had two different connections in ArcCatalog, trying a connection as administrator and one as a user. But closing the other connection didn't fix it, deleting the other connection didn't fix it. When I look at the geodatabase properties > connections I see two connections, both from local host, but one at 6:30 today, way too early to be my current ArcCatalog connection. One is in italics, one is in non-italics. What does that indicate? When I clicked on the italics one, disconnect was not allowed, and when I clicked on the non-italics one and tried to disconnect I got "Entry for SDE instance not found in services file". What would you do here? What documentation should I be looking at?