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 (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
Components BLU Acceleration Tables/Index (Range MQ MDC etc.)
Created by Guest
Created on Dec 15, 2015

RELATED IDEAS

BLU CDE Online REORG

Currently BLU CDE tables only have the RECLAIM EXTENTS option of REORG enabled. This does not physically move rows and therefore REORG cannot reclaim extents unless 100% of the rows in an extent have been deleted (via deletes or BLU updates). Also, synopsis rows don't get removed unless every row in a range of 1024 rows have been deleted (or updated)

A manual work-around whereby "dummy updates" are performed on ranges of rows on the base table is possible, but is neither elegant or particularly efficient.

The preferred solution would be for REORG be extended to look for extents or TSN ranges that have a significant percent of deleted tuples. REORG should then move the remaining live rows to the end of the table, to allows those extents to be reclaimed and/or synopsis rows to be removed.

Note that Development (the DB2-CE CDE Storage team) have been involved in the PMR with comments in CRM / RCT.
  • Guest
    Reply
    |     Jul 10, 2023

    We are wasting space and some queries suffer poor performance because of this issue. We export/load data to get around it but that is very clunky.

  • Guest
    Reply
    |     Mar 10, 2021

    Related ideas are

  • Guest
    Reply
    |     Mar 10, 2021

    My client uses ADMIN_MOVE_TABLE on column org tables as a workaround for Reorg - they would also be happy with a more extensive REORG functionality.

  • Guest
    Reply
    |     Mar 8, 2021

    Dubai Islamic Bank using IIAS raised similar concerns and opened PMRs complaining inefficient reclaim process that is resulting in inorganic storage consumption.

  • Guest
    Reply
    |     Mar 8, 2021

    Our client - Eurobank - is asking for this.
    Their daily ETL process deletes chunks of data from specific target tables, resulting in sparse tables that grow in size. We need a "table defragment functionality" within the db2 REORG.

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.