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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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Informix Server

Showing 448

UPDATE STATISTICS MEDIUM/HIGH with PDQ should favour use of indices for sort when more than one column is specified

Currently (in my testing) any UPDATE STATISTICS MEDIUM/HIGH statement with PDQ specifying more than one column will not use indices for sort and will instead scan the table, write to temporary files and sort. This is true even when all columns spe...
almost 2 years ago in Informix / Informix Server 0 Not under consideration

Sort data calculations should not be used to determine number of passes for UPDATE STATISTICS MEDIUM/HIGH statements where an index is used, fix misleading explain output

UPDATE STATISTICS MEDIUM/HIGH can be used with an explain option. The explain file always shows a sort data calculation which then determines the number of table scans (passes) the database engine will undertake. These are calculated before any de...
almost 2 years ago in Informix / Informix Server 0 Not under consideration

Do not allocate MGM memory to UPDATE STATISTICS MEDIUM/HIGH with PDQ if index is used for sort

If an UPDATE STATISTICS MEDIUM/HIGH statement with PDQ is run, Informix will allocate memory for sorts from the memory grant manager (MGM). This happens regardless of whether there is any sorting to do. If a single indexed column is specified in t...
almost 2 years ago in Informix / Informix Server 0 Not under consideration

Avoid UPDATE STATISTICS [LOW] sampling failures due to data skew

If onconfig parameter USTLOW_SAMPLE is set, sampling will be used for all UPDATE STATISTICS LOW commands. On some tables this will always or nearly always fail due to data skew, printing a message like: Warning: update statistics low using samplin...
almost 2 years ago in Informix / Informix Server 1 Not under consideration

Better checkpoint flush statistics

Improve checkpoint flush statistics to show storage performance issues better.
about 4 years ago in Informix / Informix Server 0 Not under consideration

CREATE MATERIALIZED VIEW

The materialized view functionality will increase the performance.
over 9 years ago in Informix / Informix Server 1 Not under consideration

Config for the server to refuse to start if shared memory segments do not use huge pages.

When shared memory segments are not using huge pages there can be performance impact I would like an option for the engine to abort startup similar to FULL_DISK_INIT=0 if huge pages cannot be used for shared memory segments. Scenario: sysmaster sy...
almost 5 years ago in Informix / Informix Server 0 Not under consideration

ifxclone to not change BUFFERPOOLS

ifxclone to not change BUFFERPOOLS when running.
almost 2 years ago in Informix / Informix Server 0 Not under consideration

Support for datetime with timezone

Informix currently lacks an SQL standard datatype to store datetime/timestamp with timezone. This datatype is supported on other databases with different datatypes names: “TIMESTAMP WITH TIME ZONE/LOCAL TIME ZONE” in Oracle “TIMESTAMP WITH TIME ZO...
about 1 year ago in Informix / Informix Server 0 Under review

Allow DDL changes on a table with full row logging

We want to use CDC to replicate data changes to a different system. We do schema changes once a month, and this complicates things a lot. According to our vendor, this is a limitation for Informix only, other source systems can hande DDL changes t...
over 3 years ago in Informix / Informix Server 0 Future consideration