IBM Data and AI Ideas Portal for Customers
Hide about this portal


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 (https://ideas.ibm.com).


Shape the future of IBM!

We invite you to shape the future of IBM, including product roadmaps, by submitting ideas that matter to you the most. Here's how it works:


Search existing ideas

Start by searching and reviewing ideas and requests to enhance a product or service. Take a look at ideas others have posted, and add a comment, vote, or subscribe to updates on them if they matter to you. If you can't find what you are looking for,


Post your ideas

Post ideas and requests to enhance a product or service. Take a look at ideas others have posted and upvote them if they matter to you,

  1. Post an idea

  2. Upvote ideas that matter most to you

  3. Get feedback from the IBM team to refine your idea


Specific links you will want to bookmark for future use

Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

IBM Unified Ideas Portal (https://ideas.ibm.com) - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM.

ideasibm@us.ibm.com - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.

IBM Employees should enter Ideas at https://ideas.ibm.com


Add a new idea Subscribe
Status Future consideration
Workspace Db2 Utilities Suite for z/OS
Created by Guest
Created on May 23, 2021

RELATED IDEAS

No Implicit Runstats when running Reorg that materializes pending DDL

See this idea on ideas.ibm.com

When a REORG is run to materialize a pending DDL change, the REORG enforces an inline statistics (RUNSTATS) even though no statistics keywork is added to the REORG statement/card. it defaults to TABLE(ALL) INDEX(ALL).

This obviously can impact access paths as in some real world scenarios the tables have got special statistics that may get overwritten, tables may have default stats and these may be preferable, the tables may actually be empty or non representative of the actual usage as most high profile table changes are chosen to be altered during low or no activity time.

Also sometimes the Reorg is embedded in a long list of change tool stream and this behaviour may be easy to miss when looking at a multi table and/or complex change DDL/stream. Having said that, the REORG run output does clearly indicate that the statistics were updated.

An option to disable the implicit statistics gathering will help with REORG performance and also preserve the existing catalog statistics.

Needed by Date Oct 31, 2021
  • Guest
    Reply
    |     Jul 27, 2023

    While we wait for IBM to provide an enhancement, to prevent statistics from being updated, add STATISTICS REPORT(YES) UPDATE(NONE) to the control card to prevent the statistics update.

By clicking the "Post Comment" or "Submit Idea" button, you are agreeing to the IBM Ideas Portal Terms of Use.
Do not place IBM confidential, company confidential, or personal information into any field.

Contact IBM Privacy Terms of use Accessibility