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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Db2 for z/OS

Showing 953 of 14678

Improve DB2 sliding scale algorithm (SECQTY -1)

The maximum secondary space allocation of 559 cylinders for objects of 64GB or greater is too little causing the number of extents hits the limit of 255 or if using Extent Constraint Removal it would generated many extents. For the cases where the...
about 3 years ago in Db2 for z/OS 1 Not under consideration

additional Db2 accounting info when SELECT FROM FINAL TABLE is used

When I use SQL UPDATE then the accounting information is very clear that UPDATE was used. If I wrap that UPDATE with SELECT FROM FINAL TABLE on the outside then the accounting information does not clearly show UPDATE was used. This is tricky and a...
about 3 years ago in Db2 for z/OS 1 Not under consideration

Referential Integrity for Real-time Statistics Tables (RI for RTS)

OVERVIEW: The RTS tables do not have DB2-enforced RI. The DB2 component that handles the maintenance of this data can encounter certain failures that can result in obsolete/invalid/orphaned data in the table(s). By the way, this is more prevalent ...
over 3 years ago in Db2 for z/OS 1 Not under consideration

Increase (over current limit of 10000) the value for Zparm MAXARCH

Is it possible to increase (over current limit of 10000) the value for Zparm MAXARCH (archive log volumes that are to be recorded in the BSDS). Our Production System sometimes cuts over 5,000 Archive Logs in the business' standard Image Copy reten...
over 3 years ago in Db2 for z/OS 1 Not under consideration

A Sort-Merge Join should be considered when joining on a SUBSTR expression

When tuning the following query, I saw that changing the "INNER JOIN" to a "FULL JOIN" caused it to perform many times better (which changed the join from a NLJ to a SMJ): SELECT ARCHIVE_STRT.LOCAL_TS AS LOCAL_TS_STRT, TIMESTAMPDIFF(2, CAST(ARCHIV...
over 3 years ago in Db2 for z/OS 1 Not under consideration

With RACF-exit, support auth cache refresh for RACF profiles with RACFVARS

Currently RACF ENF signals for the DB2 auth cache refresh are ignored if the profile contains a &RACFVAR class variable. This blocks the practical use of these profiles. In our case we have on one sysplex two different sets of DB2 subsystems(o...
almost 4 years ago in Db2 for z/OS 1 Not under consideration

Optimization access paths currently used for SELECTs should also apply to UPDATEs (and DELETEs)

Currently, as I write a SELECT query with a correlated Sub-select (and no other predicates), I see that the optimization for that query uses a non-correlated sub-select and the query runs very fast. But, if I use exactly the same predicate, but wr...
almost 4 years ago in Db2 for z/OS 1 Not under consideration

"DBRM load module cross-reference feature" be incorporate into Db2 Administration Tool

As of April 30th, of 2020, IBM Db2 Bind Manager got  'end of service' and would not be supported anymore. Some Bind Manager Function were integrated to the IBM Db2 Administration Tool v12.1 but "DBRM load module cross-reference feature" was not i...
about 4 years ago in Db2 for z/OS 2 Not under consideration

Zero Downtime during Online CRM Application Migration

Problem Statement : Transaction 1 (T1) is intended to delete and subsequently insert few records to a table TB1. The business logic is like, this T1 should be open and not to commit as well until the end of delete followed by insert operation. ...
about 4 years ago in Db2 for z/OS 1 Not under consideration

A new command "REBIND QUERY" should be made available.

When packages become invalid due to maintenance activities, they may be rebound when needed. But, when a hint is established by running a "BIND QUERY" command, that bound query may become invalid by these same events. Restoration of that bound que...
about 4 years ago in Db2 for z/OS 1 Not under consideration

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