16.10 - Watchdog Process - Teradata Unity

Teradata Unity User Guide

Product
Teradata Unity
Release Number
16.10
Published
January 2018
Language
English (United States)
Last Update
2018-03-29
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In high availability (HA) installations, the watchdog process monitors sequencer operations to determine the active and standby states. Each watchdog process maintains a heartbeat connection with both the local and remote processes.

For all Unity configurations (HA/Single Availability (SA)), the watchdog monitors local processes and restarts any process that stops unexpectedly.

In HA installations, two watchdogs are installed automatically with the two initial regions set up during install. These two watchdogs monitor the local processes in their region and control sequencer HA.

Additional watchdogs can be added to new regions. These additional watchdogs are not part of HA, and only provide process monitoring in their region.