DISPATCHERS: In the shared server architecture, configures dispatcher processes.
MAX _DISPATCHERS: The maximum number of dispatcher processes that can run at the same time is defined.
SHARED_SERVERS: There will be a minimum of shared server processes on the server. This number of shared servers is determined during the initialization process.
MAX_SHARED_SERVERS: The maximum number of shared server processes that can run at the same time is determined by this parameter.
SHARED_SERVER SESSIONS: This is the only required parameter for using shared servers, and it defines the maximum number of concurrent sessions that can be used for shared server connections.
CIRCUITS: The maximum number of virtual circuits that can exist in the system is determined by this parameter.