Properties installed with Event Management

Event Management adds these properties. Be cautious when changing Event Management property values, as these settings can greatly affect overall system performance.
Note: To open the System Property [sys_properties] table, enter sys_properties.list in the navigation filter.
Property Description
evt_mgmt.query_based_service_graph_handler.page_count Page size of CIs from the technical service to be fetched at once while calculating technical service Impact Tree Page size in a single fetch of CIs while calculating the Impact Tree for a technical service.
  • Type: integer
  • Default value: 100
  • Location: Event Management > Properties
evt_mgmt.event_processor_enable_multi_node Enable multi node event processing
  • Type: true | false
  • Default value: false
  • Location: Event Management > Settings > Properties
  • Learn More: Alert binding procedures
evt_mgmt.event_processor_job_count Number of scheduled jobs processing events
evt_mgmt.max_events_processing_per_job Maximum events to be processed by every scheduled job
  • Type: integer
  • Default value: 5000
  • Location: Event Management > Settings > Properties
evt_mgmt.impact_calulation.alert_group_support Enable alert group support
evt_mgmt.impact_maintenance.sleep_time_sec Minimum time in seconds for checking CI maintenance: checks both the Status field on the CI and any change request schedule for the CI.
  • Type: integer
  • Default value: 60
  • Location: Event Management > Settings > Properties
evt_mgmt.alert_auto_close_interval Auto close interval (in hours), within which open alerts will be automatically closed; Setting to 0 disables the feature

The number of hours the system waits until it automatically closes an expired alert.

evt_mgmt.active_interval Active interval (in seconds), within which a new event reopens a closed alert

Determines the time interval within which a new event that is identified as a recurrence of an existing issue updates the existing alert or, if the alert has been closed, reopens the alert.

evt_mgmt.connector_test.progress_timeout Test connector timeout interval

The number of seconds the Test Connector UI action waits for a response before timing out.

  • Type: integer
  • Default value: 120
  • Location: Event Management > Settings > Properties
evt_mgmt.log_debug Display logs for debugging

Determines whether Event Management logs event and alert processing.

  • Type: true | false
  • Default value: false
  • Location: Event Management > Settings > Properties
sa.impact.crash_interval Timeout for the impact calculation (in minutes)

If the calculation is not complete within the specified period, it is assumed as failed and any free calculation thread/node will attempt to re-calculate.

evt_mgmt.flap_interval Flap interval (in seconds), within which an alert enters the flapping state

Determines the time interval within which an alert enters into the flapping state. An alert enters the flapping state if its flap count—that is, the number of times it has fluctuated between states—meets or exceeds the flap frequency value within the flap interval time period.

  • Type: integer
  • Default value: 120
  • Location: Event Management > Settings > Properties
  • Learn More: Configure alert flapping
evt_mgmt.flap_frequency Flap frequency, frequency an alert must reoccur to enter the flapping state. An alert enters the flapping state if its flap count meets or exceeds the specified value within the time period specified by the flap interval property.

Determines the number of times an event must reoccur within the flap interval time period for the alert to enter the flapping state. An alert enters into the flapping state if its flap count meets or exceeds the flap frequency within the flap interval.

  • Type: integer
  • Default value: 10
  • Location: Event Management > Settings > Properties
  • Learn More: Configure alert flapping
evt_mgmt.flap_quiet_interval Flap quiet interval (in seconds), quite time that must pass for an alert to exit the flapping state. An alert exits the flapping state if the difference between the alert's last flap time and the time of the new event exceeds the specified value.

Determines the time interval that determines whether an alert exits the flapping state. An alert exits the flapping state if the time between alert's last flap update and the time of the new event exceeds this property.

  • Type: integer
  • Default value: 300
  • Location: Event Management > Settings > Properties
  • Learn More: Configure alert flapping
evt_mgmt.max_alerts_to_display Maximum number of alerts to show on the Event Management alert panel on the dashboard and map

Specifies the upper limit of the number of alerts that are displayed in the alert panel under the Event Management dashboard and map. For example, if the value 5 is specified and there are 6 alerts, only 5 alerts are displayed. To see all the alerts without regard to this upper limit, open the Alert Console.

  • Type: integer
  • Default value: 500
  • Location: Event Management > Settings > Properties
evt_mgmt.fetch_limit Fetch limit, number of queued events to be fetched by the event processor in a single fetch

Determines the number of queued events to be fetched at a time by Event Management.

  • Type: integer
  • Default value: 500
  • Location: Event Management > Settings > Properties
evt_mgmt.alert_ack_on_close Acknowledge an alert when manually closing it

Determines if manually closing an alert acknowledges the alert.

evt_mgmt.alert_closes_incident Closing alerts determines the system action when an alert is closed
evt_mgmt.alert_reopens_incident Reopening alerts determines the system action when an incident is reopened
evt_mgmt.incident_closes_alert Resolving an incident closes the associated alerts.

Determines if associated alerts are closed when an incident is resolved.

evt_mgmt.import_service.levels Number of connected CI levels when importing a Fuji Event Management business service into a new manual service
  • Type: integer
  • Default value: 4
  • Range of possible values: 1-11
  • Location: Event Management > Settings > Properties
mid.server.connector_default Default MID Server for connectors

Determines the MID Server connectors to use when no MID Server is specified. Must match a MID Server name.

  • Type: string
  • Location: System Property [sys_properties] table
evt_mgmt.update_alert_restricted_fields_elapsed_time Minimum time in seconds to wait before updating an alert for identical events
evt_mgmt.event_rules.num_of_events_to_handle Number of events to handle for event rules processes.
  • Type: integer
  • Default value: 50000
  • Location: Event Management > Settings > Properties
evt_mgmt.max_alerts_to_display Maximum number of alerts to show on the dashboard
evt_mgmt.valid_processing_duration_of_event_rule Time (in seconds) of valid processing duration of event in event rules evaluating.
  • Type: integer
  • Default value: 60
  • Location: Event Management > Settings > Properties
evt_mgmt.enable_alert_correlation Enable alert correlation calculation
  • Type: true | false
  • Default value: false
  • Location: Event Management > Settings > Properties
evt_mgmt.max_worknotes_on_alert Maximum alert work notes. When the maximum number is reached, further work notes are purged from the alert.
  • Type: integer
  • Default value: 50
  • Location: Event Management > Settings > Properties
evt_mgmt.remote_incident_url URL of the instance for incident management
  • Type: string
  • Location: Event Management > Settings > Properties
evt_mgmt.remote_incident_credentials Name from the credentials list that defines which credentials to use when accessing a remote incident management instance
  • Type: string
  • Location: Event Management > Settings > Properties
sa.map.LIMIT_MAX_GRAPH_SIZE Enable limitation of business service maps drawing by number of nodes and edges. ServiceNow recommends that this property be specified and not be disabled.
  • Type: true | false
  • Default value: false
  • Location: Event Management > Settings > Properties
sa.map.MAX_NODES_FOR_LAYOUT Maximal number of displayable nodes on business service maps. Maps with larger values are not displayed. ServiceNow recommends that the value specified not to exceed 5000.
  • Type: integer
  • Default value: 5000
  • Location: Event Management > Settings > Properties
sa.map.MAX_EDGES_FOR_LAYOUT Maximal number of displayable edges on business service maps. Maps with larger values are not displayed. ServiceNow recommends that the value specified not to exceed 1000.
  • Type: integer
  • Default value: 1000
  • Location: Event Management > Settings > Properties
sa.map.LIMIT_GRAPH_DEGREE Maximal degree of node on business service map for large map modes. Maps with smaller degrees are displayed in regular mode. Maps with larger degrees apply more edge merging for a view that is more compact. ServiceNow recommends that the value specified not to exceed 1000.
  • Type: integer
  • Default value: 1000
  • Location: Event Management > Settings > Properties