States and Events Overview | Teradata Vantage - States and Events Overview - Analytics Database - Teradata Workload Management

Teradata Vantageā„¢ - Workload Management User Guide - 17.20

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Workload Management
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-01-27
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B035-1197
Product Category
Teradata Vantage
The best practice under normal operating conditions is to use only one ruleset. Instead of creating multiple rulesets for different situations, you can create states to define how TASM allocates resources during different times of the day, different days of the month, or when system performance is degraded. Moving from one state to another, due to planned or unplanned circumstances, results in an automatic change in the workload management settings. Only one state in one ruleset can be in effect at a time. State definitions consist of these factors:
  • Health conditions: These define system health, for example, a degraded health condition. You can define an unplanned event that triggers a health condition, such as a down node.
  • Planned environments: These are time frames or different processing windows that the system supports, for example, a Late-Night planned environment for batch jobs.
Administrators define events that cause a health condition or a planned environment to change. A change to either or both causes a state change, depending on how the state matrix is defined. Events include the event definition and the actions that Vantage takes when the event occurs. The event definition can be based on the occurrence of a single event or a combination of events. When an event occurs, Vantage can take one of these actions:
  • Change the health condition or planned environment
  • Send an alert
  • Run a program
  • Post a notification to the system queue table (DBC.SystemQTbl)

Once you create a state, you can apply filters, throttles, and workloads based on that state.