IBM Data and AI

Welcome to the IBM Data and AI Ideas Portal for Clients!

We welcome and appreciate your feedback on IBM Data and AI Products to help make them even better than they are today!
Before you submit an idea, please perform a search first as a similar idea may have already been reported in the portal. If a related idea is not yet listed, please create a new idea and include with it a description which includes expected behavior as well as why having this feature would improve the service and how it would address your use case.
IBM Employees:
Clients:
  • Our team welcomes any feedback and suggestions you have for improving our offerings / products! This forum allows us to connect your offering / product improvement ideas with IBM product and engineering teams.

  • If you have not registered on this portal please click on the following link and register. To complete registration you will need to open the email you will receive from Aha to confirm your identity. http://ibm.biz/IBM-Data-and-AI-Portal-Register

Additional Information:
  • The shorter URL for this site is: https://ibm.biz/IBM-Data-and-AI-Ideas

  • 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

  • Please do not use the Ideas Portal for reporting bugs - we ask that you report bugs or issues with the product by contacting IBM support.

Use of access path to decide whether to use NATIVE / SQL mode

We have several unloads that use HPUs with SUPPORTED select that download UTS PBG.
Queries are unfortunately written by programmers who can change them independently and often don't know how many rows they will have to download and therefore they don't know if it is more convenient to use SQL MODE or NATIVE MODE. Often we have queries that with SQL MODE would be optimized with the use of indexes but using as default DB2 YES HPU decides to use NATIVE MODE and scans all the vsam consuming a lot of cpu and very high elapsed  times to download a few lines.

Now when we intercept these cases we ask the programmers to use DB2 FORCE

We opend pmr 15863,830,758 but we were told that hpu works as it was designed

  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • May 25 2019
  • Future consideration
Who would benefit from this IDEA? With this proposal we would have better performance with lower CPU consumption and reduced elapsed
How should it work?

HPU if supported query should explain the query and decide according to the access path and statistics when it suits them to use SQL NATIVE MODE or MODE

Idea Priority High
Priority Justification Reducing consumption is one of our top priorities
Customer Name Intesa Sanpaolo
  • Attach files

NOTICE TO EU RESIDENTS: per EU Data Protection Policy, if you wish to remove your personal information from the IBM ideas portal, please login to the ideas portal using your previously registered information then change your email to "anonymous@euprivacy.out" and first name to "anonymous" and last name to "anonymous". This will ensure that IBM will not send any emails to you about all idea submissions