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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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BLU Acceleration

Showing 22

Include CTQ reason / details in db2exfmt advanced diagnostics

We need an "Extended Diagnostic Information" in Explain (db2exfmt) that details if and why the column organized tables had been (early) converted to the row format for processing it in the row engine. This is important to detect performance issues...
over 1 year ago in Db2 / BLU Acceleration 3 Not under consideration

Do not truncate trailing blanks in columnar Group By

BLU columnar engine does not carry trailing blanks in varchar columns during GROUP BY processing. It does not bring non-normalized variant through the grouping operation
over 3 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.
almost 4 years ago in Db2 / BLU Acceleration 0 Not under consideration

using none unique index to accelerate update and delete on column-organized

there is a limitation (https://www.ibm.com/support/knowledgecenter/SSEPGG_11.5.0/com.ibm.db2.luw.admin.perf.doc/doc/r0061828.html) Update and delete operations that use an index scan on a column-organized table are not supported by the FETCH opera...
about 4 years ago in Db2 / BLU Acceleration 0 Not under consideration

Detect corrupted synopsis tables online

There is a need to report all corrupted synopsis tables online. Currently, db2dart /crs can do it per table and it's done offline.
almost 5 years ago in Db2 / BLU Acceleration / Tables/Index (Range MQ MDC etc.) / Utilities (Export Import Load db2look etc) 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 5 years ago in Db2 / BLU Acceleration 0 Not under consideration

[Copy] 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 5 years ago in Db2 / BLU Acceleration / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Db2 Warehouse Need support for columnar tables when case insensitivity is configured

System: IBM Integrated Analytics SystemActor: Customer requiring capability My customer is migrating from Teradata to Db2 Warehouse (IIAS appliance). The appliance has been configured for Row-organized tables because case insensitivity is required...
over 5 years ago in Db2 / BLU Acceleration 0 Not under consideration

ALTER TABLE LOCKSIZE TABLE for BLU tables

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.
almost 6 years ago in Db2 / BLU Acceleration 0 Not under consideration

Full STMM support for BLU

Today SORTHEAP and SHEAPTHRES_SHR need to be set to a fixed value to run BLU.The STMM tuned adjustment don't need to be highly sophisticated. E.g. keeping 60/40 ratio for bufferpool/sheapthres_shr and adjust sortheap as ratio taking the amount of ...
almost 6 years ago in Db2 / BLU Acceleration 0 Not under consideration