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IBM Data and AI Ideas Portal for Customers

This portal is to open public enhancement requests against products and services offered by the IBM Data & AI organization. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (

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Welcome to the IBM Ideas Portal ( - Use this site to find out additional information and details about the IBM Ideas process and statuses.

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Status Future consideration
Workspace Db2
Components Workload Management
Created by Guest
Created on Feb 28, 2023

Work identification based on number of subsections in a statement.

Work identification can currently be done based on Estimated cost, Estimated cardinality, Estimated data accessed. 

Ref: "Work identification by type, cost, or data accessed with work classes - IBM Documentation"

This allows for identification of complex workloads and apply  concurrency controls as required.

Another type of complex workload that can lead to high resource consumption is statements with a large number of subsections.

Especially with columnar tables in a partitioned environment, a large number of subsections can exist for statements. 

Each of these subsections might run in parallel requiring a large number of threads (db2 edus).

Each of these threads will also require memory resources (mainly application heap).

This creates a need for concurrency control for statements that fit this category in order to limit the resource consumption and avoid unexpected resource exhaustion scenarios.


Needed By Not sure -- Just thought it was cool