Down Subtable Recovery - Advanced SQL Engine - Teradata Database

Database Introduction

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-23
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B035-1091
lifecycle
previous
Product Category
Teradata Vantageā„¢

Teradata Database can isolate some file system errors to a specific data or index subtable, or to a contiguous range of rows ("region") in a data or index subtable. In these cases, Teradata Database marks only the affected subtable or region down. This improves system performance and availability by allowing transactions that do not require access to the down subtable or rows to proceed, without causing a database crash that would require a system restart.

In-progress transactions that require the down subtable or region are aborted. Subsequent transactions that require access to the down subtable or region are not allowed until the problem is fixed.