Enable Step Logging | Teradata Vantage - Enabling Step Logging To Aid in Map Analysis - Analytics Database - Teradata Vantage

Database Administration

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
2023-11-03
dita:mapPath
pgf1628096104492.ditamap
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ujp1472240543947
lifecycle
latest
Product Category
Teradata Vantageā„¢

Before analyzing how tables use maps, you can optionally enable DBQL step logging. The information step logging collects helps Teradata decide which tables to keep together for join processing efficiency when redistributing tables. For example:

BEGIN QUERY LOGGING WITH STEPINFO ON ALL;

Teradata recommends leaving logging on for 7 days to capture a set of queries that are representative of the workload on your system.

If there is no step logging, Teradata groups tables by database when redistributing them.