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IBM Data and AI Ideas Portal for Customers

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:

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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,

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BLU Acceleration

Showing 27 of 12617

System maintained MQTs for BLU MPP

We use DB2 v10.5 DPF for a Warehouse Environment (40TB Data, ~9000 Users, 40 Tsd. Reports per day). We want to migrate the database to DB2 v11.1.1.1 BLU MPP with all tables column oriented. In this case we have checked the functionality for system...
over 5 years ago in Db2 / BLU Acceleration 0 Not under consideration


ALTER TABLE LOCKSIZE TABLE is an easy way to save lock list and lock acquire for tables that just get accessed by a single application at a given time.
about 4 years ago in Db2 / BLU Acceleration 0 Not under consideration

Create User Temporary Tables in round robin

Assuming that there is more than one temp tablespace with the same page size and 'IN TABLESPACE' clause is not specified in the DECLARE GLOBAL TEMPORARY TABLE command, then DB2 optimizer should allocate the temp tables across all temporary tablesp...
over 3 years ago in Db2 / BLU Acceleration 0 Not under consideration

Re-build synopsis statistics in BLU

Provide a function to rebuild the synopsis table metadata online/offline to improve query performance.
over 6 years ago in Db2 / BLU Acceleration 0 Not under consideration

Avoid SQL0955C Sort memory cannot be allocated to process the statement. Reason code = 3

It would avoid Db2 errors and interruptions. Every customer using Db2 BLU who ran (or will run) into SQL0955 RC3 errors would benefit.
about 2 years ago in Db2 / BLU Acceleration 0 Not under consideration

Provide SYSTEM / UNIQUE collation sequence support for column organized tables when codepage is 819

The lack of support for anything other than IDENTITY collation sequence for codepage 819 makes migration to BLU very difficult for customers who use it.
about 5 years ago in Db2 / BLU Acceleration 0 Not under consideration

Support additional single-byte encodings for column-organized tables

The latest updates to DB2 have added the support of codepage 809 (ISO8859-1) for databases using column-organized tables..This is good for many Western customers, who are able to avoid switching to Unicode (and paying the penalty of 2x or 3x chara...
about 5 years ago in Db2 / BLU Acceleration 0 Not under consideration

Support mixed row/column environments without requiring CUR_COMMIT=ON

We have recently run into a problem when we enable Cur_commit because of the locking behavior expected by some applications (they expect blocking). Therefore, we have to disable CC, but then that app cannot use blu. We want to give our plant the a...
over 3 years ago in Db2 / Tables/Index (Range, MQT, MDC, etc.) / BLU Acceleration 0 Planned for future release

Temporal table support for column-organized tables

Currently, a column-organized table cannot be a temporal table because a PERIOD SYSTEM_TIME or PERIOD BUSINESS_TIME declaration is not supported in column-organized tables. This prohibits temporal data management with BLU. We request that column-o...
over 5 years ago in Db2 / BLU Acceleration 0 Not under consideration

Improve performance of DB2 BLU SQL with the GROUP BY subquery

Our customer newly built the DWH system using DB2 BLU.But certain SQL's performance is extremely bad.Problem SQLs are with the GROUP BY subquery and the SET clause subselect.STSC says it‘s a matter of architecture, not a problem and they offered...
over 7 years ago in Db2 / BLU Acceleration 0 Planned for future release