Controls whether a database is stopped as soon as there are no more open connections.
By default, any server that is started from a connection string is stopped when there are no more connections to it. Also, any database that is loaded from a connection string is unloaded as soon as there are no more connections to it. This behavior is equivalent to AutoStop=YES.
If you supply AutoStop=NO, any database that you start in that connection remains running when there are no more connections to it. As a consequence, the database server remains operational as well.
The AutoStop (ASTOP) connection parameter is used only if you are connecting to a database that is not currently running. It is ignored if the database is already started.