Partial Unity Process Failures | Teradata Unity - 17.00 - Partial Unity Process Failures - Continuous Availability - Teradata Unity

Teradata® Unity™ User Guide

Product
Continuous Availability
Teradata Unity
Release Number
17.00
Published
September 2020
Language
English (United States)
Last Update
2020-09-15
dita:mapPath
fmz1594836948704.ditamap
dita:ditavalPath
qqk1595871525984.ditaval

The Unity software stack consists of four components: the Endpoint, Watchdog, Sequencer, and Dispatcher. These components include built-in high availability. The Unity Watchdog, Endpoint, and Dispatcher have built-in automatic capabilities to handle failures. The dispatcher always has an associated standby process running on the second Unity server. That server becomes active immediately if the active dispatcher for a Teradata system fails. All of the processes restart automatically if they fail unexpectedly, after a period of 5 minutes (for the Endpoint, Sequencer, or Dispatcher) or 10 minutes (for the Watchdog).