org.netbeans.api.db.explorer.DatabaseException: connection error; No more data to read from socket
   at org.netbeans.modules.db.explorer.DatabaseConnector.performDisconnect(DatabaseConnector.java:186)
   at org.netbeans.modules.db.explorer.DatabaseConnection.disconnect(DatabaseConnection.java:1069)
   at org.netbeans.modules.db.explorer.action.DisconnectAction$1.run(DisconnectAction.java:100)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1426)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1968)