IBM Data and AI Ideas Portal for Clients

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:

Post your ideas

If you have not registered on this portal please register at . To complete registration you will need to open the email you will receive from Aha to confirm your identity.

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,

  1. Post an idea

  2. Upvote ideas that matter most to you

  3. Get feedback from the IBM team to refine your idea

Help IBM prioritize your ideas and requests

The IBM team may need your help to refine the ideas so they may ask for more information or feedback. The offering manager team will then decide if they can begin working on your idea. If they can start during the next development cycle, they will put the idea on the priority list. Each team at IBM works on a different schedule, where some ideas can be implemented right away, others may be placed on a different schedule.

Receive notification on the decision

Some ideas can be implemented at IBM, while others may not fit within the development plans for the product. In either case, the team will let you know as soon as possible. In some cases, we may be able to find alternatives for ideas which cannot be implemented in a reasonable time.

Additional Information

To view our roadmaps:

Reminder: This is not the place to submit defects or support needs, please use normal support channel for these cases

IBM Employees:

The correct URL for entering your ideas is:

Are sparse files supported by Db2

During a Restore of sparse files - where a large file is allocated, but is not fully created physically (preparation and population of many of the underlying blocks is deferred until they are needed)

  • Guest
  • Oct 6 2020
  • Future consideration
Who would benefit from this IDEA? All customers
How should it work?

Sparse files can increase the performance

Idea Priority Medium
Client Name unilever
  • Attach files
  • Guest commented
    22 Oct, 2020 08:38am

    As db2 creates and manages datafiles, containters, tablespace as sparse files. So when we initiate db2 backup command(db2 backup db <DBNAME> online) db2backup preserves the sparseness (holes) of datafiles in backup sets. And when we do db2 restore it aggressively preserves sparseness.

    So it means if underlying file system doesn't have sparse feature, then during db2restore operation -> holes in sparse files will get converted into zeros and restore operation will take more time as compared to restoring on filesystem with sparse feature where holes are restored as holes.

    Sparse feature was introduced in NFSv4.2. However AIX neither supports NFSv4.1 or NFSv4.2

    Sparse is file system property/feature

    A sparse file is a file with empty space, or gaps, left open for future addition of data. If the empty spaces are filled with the ASCII null character and the spaces are large enough, the file will be sparse, and disk blocks will not be allocated to it. Empty space is called holes in sparse file. The information about holes is stored in metadata, if file managed by db then database manages the metadata of sparse file.

    It does not fill the empty space with zero byte blocks, When a process reads the file, those zero byte blocks get generated dynamically as opposed to being stored on physical storage. it does not store the zeros on disk, instead it holds enough data describing the zeros that will be generated

  • Guest commented
    21 Oct, 2020 02:19pm

    Do IBM db2 on AIX or LUW creates datafiles, containers as sparse files if underlying filesystem has sparse feature enabled.

IBM's success depends on gathering feedback from customers like yourself. Aha Ideas Portal is the third party tool through which IBM Offering Managers gather feedback from customers such as yourself.
IBM is a global organization with business processes, management structures, technical systems and service provider networks that cross borders. As such, the information collected through Aha Ideas Portal (Customer Name, Customer Email Address) will be stored by them in the United States, and handled only as per IBM's instructions and policies. Your data (Name and Email Address) will NOT be shared with other IBM customers.
In order to safeguard your information in Aha, do not leave your workstation unattended while using this application, log off after using it, and print only if necessary. If you need to make a hardcopy, remember to pick up the print-out immediately, keep it under lock, and destroy it immediately when no longer needed.
NOTICE TO EU RESIDENTS: per EU Data Protection Policy, if you wish to remove your personal information from the IBM ideas portal, please login to the ideas portal using your previously registered information then change your email to "anonymous@euprivacy.out" and first name to "anonymous" and last name to "anonymous". This will ensure that IBM will not send any emails to you about all idea submissions