Session Workload Assignment | Teradata Vantage - 17.10 - Session Workload Assignment - Advanced SQL Engine - Teradata Workload Management

Teradata Vantageā„¢ - Workload Management User Guide

Advanced SQL Engine
Teradata Workload Management
Release Number
Release Date
July 2021
Content Type
User Guide
Publication ID
English (United States)

When a session logs on, Vantage assigns it to a workload. This workload is used for session management and parser-related activity for the life of the session. The session workload is logged in the SessionWDID field in DBC.DBQLogTbl.

When assigning a session workload, Vantage considers only the request source criteria of the workload (such as user and account name). The workload assigned to a session is the first workload in workload priority order whose request source criteria matches the logon information of the session.

Next, after Vantage parses a request, it classifies each request into a workload using all classification criteria and the plan created by the parser. The request can be assigned to a different workload than the session. Requests that use only the parsing engine, such as CALL, SHOW, and HELP statements will run in the session workload.