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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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Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

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Informix Server

Showing 309

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...
about 1 year 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...
about 1 year 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...
about 1 year 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...
about 1 year ago in Informix / Informix Server 0 Not under consideration

Allow more than 50 MB for UPDATE STATISTICS MEDIUM/HIGH sort operations

UPDATE STATISTICS MEDIUM/HIGH operations that do not use indices for sort are restricted to 50 MB before the system will use temporary space. This limit has remained unchanged for a long time and could be increased quite a lot on a modern system. ...
about 1 year ago in Informix / Informix Server 0 Not under consideration

Speed control for 'cdr sync'

'cdr sync' is a very fast and efficient way of creating a copy of a table when used with loopback replication. The problem is that it can be too quick and can create logical logs at a rate that can overwhelm replication and log backups. The idea i...
about 1 year ago in Informix / Informix Server 1 Not under consideration

ifxclone to not change BUFFERPOOLS

ifxclone to not change BUFFERPOOLS when running.
about 1 year ago in Informix / Informix Server 0 Not under consideration

ifxclone to support DIRECT_IO

ifxclone to support DIRECT_IO Currently ifxclone changes the onconfig and removes DIRECT_IO
about 1 year ago in Informix / Informix Server 0 Not under consideration

Provide the DBA with detailed connection information

When a user connects, the information of sysmaster:syssessions, onstat -u, onstat -g ses <session ID> provide information related to username, client hostname, etc. Currently its difficult/laborious to determine the Informix listener used by...
about 1 year ago in Informix / Informix Server 0 Not under consideration

Add onmode -F <type> to free only certain memory e.g. vpcache.

When having e.g. excessive vpcache usage we need to free the memory and associated shared memory segments for just the vpcache. Our use case was smx buffers to it would be even better to be able to just free the 'free' smx buffers.Trying to free a...
about 1 year ago in Informix / Informix Server 0 Not under consideration