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Status Not under consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Jan 20, 2022

Timestamp change when altering a partitioned tables partitions

The good (smart) thing about partition table is that when you take a back up you can tell BRMS to take a back up only on changed partitions.

When altering a tables partitions, the changed timestamp is changed on all partitions, not just only the ones you are altering. This is then a problem when running BRMS. It will then back up all partitions. If you have a lot of partitions and there are a lot of data on them, the back up will take a lot of time.

Can there be a add on to the altering command that says only change timestamp on affected partition?

If you have 250 partions with 1.3 Tb of data and all are changed, then it will take time.

Use Case:

We close and creates new partitions two times per month. This is for having performance when reading the data.

We don't have time to run a total back up on these tables every time we create a new partition on a table.

There fore we would like the altering statement to only update the change timestamp on the actual altered partition, not all of them.

Idea priority High
  • Guest
    Feb 18, 2022

    BM does not intend to provide a solution to this request at this time, so it is being closed.

    We understand the difficulty these change dates cause for backup processing. However, our investigation of the design indicates a solution is very complex.

    Due to the required system architectural changes that would be needed to implement this request, it is very unlikely to fit in our plan during the next 3-4 years. Therefore, we are declining it at this time.

  • Guest
    Jan 21, 2022

    The irony here is that there is a Last Member Change timestamp already assigned to File Members that is not used for non-Source File objects.