Process Architecture (contd)
- LCKn : parallel server lock processes to coordinate among multiple instances opening a single DB.
- Dnnn (Multi-threaded server dispatchers) : supports multi threaded server which can serve many users. User commands are passed to a dispatch process to which a user remains connected. Dispatcher passes the request to one of the shared servers. There is one dispatcher for several users.
- Snnn (shared servers) : part of multi-threaded feature.