Permanent Journal Recovery of Hash Indexes Is Not Supported - Analytics Database - Teradata Vantage

SQL Data Definition Language Detailed Topics

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-07-11
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B035-1184
lifecycle
latest
Product Category
Teradata Vantage™

You can use ROLLBACK or ROLLFORWARD statements to recover base tables that have hash indexes defined on them; however, the hash indexes are not rebuilt during the recovery process. Instead, they are marked as not valid. You must drop and recreate any such hash indexes before the Optimizer can use them again to generate a query plan.

When a hash index has been marked not valid, the SHOW HASH INDEX statement displays a special status message to inform you that the hash index has been so marked.