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 Delivered
Workspace Db2 for z/OS
Created by Guest
Created on Feb 20, 2017

RELATED IDEAS

DB2 and WLM MAXSPAS

We run in production DB2 system some SQL UPDATE statements.
Each statement has a lot of references to the same UDF in the SQL WHERE clause:

UPDATE xx.tablename
SET col1 = 'xx'
WHERE
col2 = xx.UDF_name(CHAR('2011-11-11-08.15.45.500000')) OR
col2 = xx.UDF_name(CHAR('...')) OR

and so on.
The appropriate WLM environment was defined as "Managed by WLM", so WLM can start a lot of servers to fullfil the requests.
Unfortunately each server/each request needs common storage in the E-SQA. This leads to virtual storage constraint.
IPL was necessary to come out of the situation.

We have discussed these behaviour with DB2 development team during V12-CERT-2017.
  • Admin
    Janet Figone
    Reply
    |     May 17, 2024

    Dear Matthias, Thank you for submitting this enhancement request. Please accept our apologies for erroneously marking this idea as Not under consideration. This was caused by a tooling automation setting that was not set properly.

    We are pleased to inform you this idea is Delivered and available via APAR PH44833.

    We appreciate your input to the Db2 for z/OS development team. And we hope that you will continue to submit enhancement suggestions for improvements as customer feedback is a key component to shaping the future direction of Db2 for z/OS.


    Sincerely,

    Db2 for z/OS Team

  • Guest
    Reply
    |     Nov 4, 2021

    It seems that a large amount of common storage is used by MSTR for each stored procedure address space which is started. If a single thread uses thousands of UDFs before committing this can be enough to exhaust available ECSA (ESQA leaks into ECSA) and can bring down an lpar. In my experience we see about 28K common storage taken by MSTR per sp address space which seems excessive. I agree with the request to limit the total number of stored procedure address spaces to be started for an application environment, but it would also be good if zparm MAX_ST_PROCS (for a single thread) would also limit UDFs not just Stored procedures. Possibly this warrants a new AHA.


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.