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).


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Other/Unknown

Showing 44

Lock access plan for a query. Prevent the optimizer from changing a plan, once a "good" plan has been determined.

We see cases where a large query runs fine, and something changes the stats, which causes the optimizer to choose a really bad plan. We would like to be able to lock an individual query, and tell the optimizer: "Just use this plan".
over 5 years ago in Db2 / Other/Unknown 0 Not under consideration

Enhance correlated subquery cardinality estimate with stat views

Peoplesoft application extensively uses correlated subqueries on EFFDT to check that EFFDT = (SELECT MAX(EFFDT) FROM ...). Cardinality estimations can be derived from PK, but this sometimes is not sufficient. We need to be able to get EFFDT estima...
about 1 year ago in Db2 / Other/Unknown 0 Not under consideration

Enhance ALTER INDEX to have MINPCTUSED option (Online)

Allow online ALTER INDEX ... MINPCTUSED %;
over 5 years ago in Db2 / Other/Unknown 0 Not under consideration

Incorporate Trace suspend option into Quiesce command

We want to remove the suspending of the incoming connections via db2trc command and make "quiesce command with force connections" do the same thing as db2trc is doing currently.
over 5 years ago in Db2 / Other/Unknown 0 Not under consideration

Optimizer should ignore RTRIM when calculation filter factor

When the optimizer calculates the filter factor for a predicate which uses RTRIM, it just returns the default value. (0.04)It should ignore the RTRIM and use the COLCARD of the column stats instead. Refer to Case: TS001114316
almost 6 years ago in Db2 / Other/Unknown 0 Not under consideration

default tablespace for a user

in DB2 there is no way to fix a default tablespace of user.
about 4 years ago in Db2 / Other/Unknown 1 Not under consideration

Enhance IBM My Notifications with Affected DB2 Version Information

Currently we subscribe to the IBM 'My Notifications' email (see: https://www.ibm.com/support/knowledgecenter/en/SSEPGG_10.5.0/com.ibm.db2.luw.admin.trb.doc/doc/t0060379.html or https://www-01.ibm.com/support/docview.wss?uid=swg21686621) so we rece...
over 4 years ago in Db2 / Other/Unknown 0 Not under consideration

Support Snapshot Isolation Level

Today, when our ETL jobs scan large amounts of data from a table with out using RS/RR isolation levels under certain conditions they see duplicate data and/or missing data. This could be caused due to the fact that rows that were already scanned c...
over 3 years ago in Db2 / Other/Unknown 0 Not under consideration

Support IBM DB2 on Amazon Linux2

Ubuntu 16.04 LTS has End of life as April 2021. We use IBM DB2 11.1.4 Enterprise Edition on Ubuntu 16.04 LTS for our MDM instances which is not compatible with the higher versions of Ubuntu -18.04 LTS and above. Same is true for the updated versio...
over 3 years ago in Db2 / Other/Unknown 0 Not under consideration

Differentiate between Read and Write IO performance (Overhead and TransferRate) and optimise accordingly

Background: Db2 is sensitive to IO performance, and compiles access plans accordingly to optimise IO versus CPU costs. At the tablespace level, average Overhead and TransferRate are configured in units of milliseconds. Issue: customers such as our...
over 6 years ago in Db2 / Other/Unknown 0 Not under consideration

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