IBM Data and AI Ideas Portal for Clients

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

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

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 offering manager 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

OQWT in DSM for Z/OS Query Advisor Enhancement needed

Query Advisor missing obvious SQL predicate datatype inconsistency

While researching a production issue in all our production systems with a remote DB2 program, we ran OQT in DSM and found that the QUERY ADVISOR was missing a very obvious and key SQL problem. A column that is defined with a CHAR datatype was being compared to a literal with NO Quotes that was all numerics. Although the Optimizer will convert it using a CAST function, it avoids the optimal use of an existing index that this column is a part of. We ended up finding it ourselves by looking at the formatted query that the tool created, but it should have showed up as a warning for us to review. I am attaching the full recommendation report that OQWT generated from our BOST production region. We are At DB2 V12 R100 . Running DSM Version 2.1 Release 2.1.5.3, Build 20190702_1507 . this is the solution that was sent to the developers (this recommendation resulted in a 99% reduction in CPU and I/O):

The SQL in APOIMP18 and APOIMP16 is listed below.

The SQLs in these programs have a WHERE clause coded: AND BATCH_PROC_D = 20191024 BATCH_PROC_D is a character column.

The SQL needs to be coded as AND BATCH_PROC_D = ‘20191024’ (put in quotes)

 

From IBM support:     Looking for an enhancement to analyze the BEFORE stage query text to detect if there is a CAST function in one side and other side in predicate is a value, then show a warning in our Query Advisor recommendation.

 

reference CASE TS002923553

  • Guest
  • Oct 30 2019
  • Future consideration
Who would benefit from this IDEA? Database Administrator and SQL developer and ultimately the end user
How should it work?

Modify Query Analyzer so that the BEFORE stage query text  can detect if there is a CAST function in one side and the other side has a predicate with a value that does not match the actual column data type, then show a warning in our Query Advisor recommendation.

 

By identifying this mismatch of datatypes in a predicate where a column is part of an index,  we can advise the developer to fix their SQL to avoid this mismatch and result in a better use of the index.  In our case making this one small change resulted in a 99% savings in CPU and I/O, as well as the ET.  User CPU timeouts were ultimately avoided.

 

Although this seems like an obvious find and fix, it was not as easy to find.  would be helpful if this Tool could identify this query tuning issue sooner and avoid manual effort to research.

Idea Priority High
Priority Justification if we could identify more of these types of datatype inconsistencies when comparing to literals in a larger scale (ie Workload)
Client Name Rachel Niedzwiecki

IBM's success depends on gathering feedback from customers like yourself. Aha Ideas Portal is the third party tool through which IBM Offering Managers gather feedback from customers such as yourself.
IBM is a global organization with business processes, management structures, technical systems and service provider networks that cross borders. As such, the information collected through Aha Ideas Portal (Customer Name, Customer Email Address) will be stored by them in the United States, and handled only as per IBM's instructions and policies. Your data (Name and Email Address) will NOT be shared with other IBM customers.
In order to safeguard your information in Aha, do not leave your workstation unattended while using this application, log off after using it, and print only if necessary. If you need to make a hardcopy, remember to pick up the print-out immediately, keep it under lock, and destroy it immediately when no longer needed.
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