IBM Data and AI Ideas Portal for Customers


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:

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

Help IBM prioritize your ideas and requests

The IBM team may need your help to refine the ideas so they may ask for more information or feedback. The product management team will then decide if they can begin working on your idea. If they can start during the next development cycle, they will put the idea on the priority list. Each team at IBM works on a different schedule, where some ideas can be implemented right away, others may be placed on a different schedule.

Receive notification on the decision

Some ideas can be implemented at IBM, while others may not fit within the development plans for the product. In either case, the team will let you know as soon as possible. In some cases, we may be able to find alternatives for ideas which cannot be implemented in a reasonable time.

Additional Information

To view our roadmaps: http://ibm.biz/Data-and-AI-Roadmaps

Reminder: This is not the place to submit defects or support needs, please use normal support channel for these cases

IBM Employees:

The correct URL for entering your ideas is: https://hybridcloudunit-internal.ideas.aha.io


Status Under review
Workspace Db2 for z/OS
Created by Guest
Created on Oct 25, 2021

Db2 z/OS real storage management (Case TS006310627)

After the observation of a significantly increase of the CPU consumption in our Db2-MSTR regions, we opened case TS006310627 at IBM since the reason was not evident. The result of the analysis with IBM showed up that probably APAR PH31684 caused the increase in CPU. This seems to be due to the introduction of the SORTL capability, which increased the memory requirement during queries with ORDER BY or GROUP BY sort. The overall increase itself was not dramatically, but the allocation and free process of the 64 bit real storage using IARV64 DISCARDDATA operation increased the CPU consumption for the MSTR address spaces.

We are looking forward and appreciate that IBM is streamlining the DISCARDDATA process in a future release of Db2 z/OS. For the time being we will keep the Db2 ZPARM REALSTORAGE_MANAGEMENT set to OFF.

Needed By Quarter