System: Network and Communication

Definition

This group includes all the parameters for communication and network management.

Viewing and Monitoring Indicators

You can retrieve the runtime values of the following indicators in your SAP CC system:

Indicators	Summary
HOSTNAME	The name of the machine hosting the instance of the SAP CC system
INSTANCE_ID	The unique identifier of the current instance in its SAP CC system. The ID includes the type of the instance and a digit number.

Setting Up System Parameters

You can set up the following system parameters that are available for different instance types in the running SAP CC Core Server system.

Parameters	Summary
CACHE_INVALIDATION_TIMEOUT	The timeout in milliseconds for waiting acknowledgements for a cache invalidation request from all the system instances except the updater
COLLECTOR_RTT	The estimated network round trip time in milliseconds
CONNECT_DEFAULT_TIMEOUT	The timeout in milliseconds for the connection with a remote instance
CONNECTION_DISPATCHER_WRITE_BUFFER	Do not use this parameter, except under SAP Support Team supervision or under specific recommendation provided within the SAP CC documentation
CONNECTION_EXTERNAL_WRITE_BUFFER	Do not use this parameter, except under SAP Support Team supervision or under specific recommendation provided within the SAP CC documentation
CONNECTION_INTERNAL_WRITE_BUFFER	Do not use this parameter, except under SAP Support Team supervision or under specific recommendation provided within the SAP CC documentation
CONNECTION_WRITE_BUFFER	Do not use this parameter, except under SAP Support Team supervision or under specific recommendation provided within the SAP CC documentation
DISPATCHER_NETWORK_FAILURE_TIMEOUT	The timeout in milliseconds for the detection of the down network
DISPATCHER_STARTING_TIMEOUT	The starting timeout for the dispatcher instances (in millisecond)
EXTERNAL_DISCOVERY_ENABLED	Enables/disables the external discovery
EXTERNAL_DISCOVERY_MULTICAST_ADDRESS	The multicast IP address for the external discovery service
EXTERNAL_DISCOVERY_PORT	The port number to access to the discovery service
EXTERNAL_SERVICE_HOST	The IP address for communicating with the stateful services of the instance via Message TCP
EXTERNAL_SERVICE_PORT	The port number for communicating with the stateful services of the instance via Message TCP
HEARTBEAT_ACTIVATION_PERIOD_COUNT	The number of polling periods of inactivity after which the heartbeat mechanism is activated
HEARTBEAT_DEAD_CONNECTION_PERIOD_COUNT	The number of polling periods after which an instance is considered as down with the heartbeat mechanism
HEARTBEAT_POLLING_PERIOD	The polling period in milliseconds of the heartbeat mechanism
HTTP_SERVER_HOST	The IP address or hostname for communicating with the HTTP services of the instance
HTTP_SERVER_PORT	The port number for communicating with the HTTP services of the current instance
INTERNAL_DISCOVERY_ENABLED	Enables/disables the internal discovery
INTERNAL_DISCOVERY_MULTICAST_ADDRESS	The multicast IP address for the internal discovery service
INTERNAL_DISCOVERY_PORT	The port number to access to the internal discovery service
INTERNAL_SERVICE_HOST	The listening IP address for multicast services
INTERNAL_SERVICE_PORT	The port number to access to the multicast services of the current instance
IP_ADDRESS_VERSION	The version of IP addresses which must be used when host names are resolved
OFF_CLASS	The identifier of the Operation Factory
PARTITION_SWITCH_TIMEOUT	The timeout in milliseconds for the detection of a failed partition switch. This timeout is for each partition.
RENEW_RESERVATION_SEND_TIMEOUT	The maximum time (in ms) to be used by the rater instance for sending the renew reservation notification
SPENDING_STATUS_REPORT_SEND_TIMEOUT	The maximum time (in ms) to be used by the rater instance for sending the spending status report
XML_SCHEMA_VALIDATION	The XML schema validation activated or not