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Status Future consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Jul 20, 2017

RELATED IDEAS

API for Access Path Rebuild Progress

We commonly have access path rebuilds occurring post the vary on of an IASP. We would like the capability to monitor the progress of the access path rebuilds from a batch job rather than just the screen.


Use Case:

We run a superannuation system on our IBMi. There are large batch processing windows and in order to keep the system available 24x7 for customers enquiries we use IASP's and flash copy technology to a HA (high availability) system for the duration of batch processing. This means that customers can continue to enquire on their superannuation balances 24x7.

Unfortunately, the flash copy we are forced to take is "dirty" because the application on the source production system cannot be shut down prior to the application being started on the target HA system. We do shut down as much as possible prior to the flash but there are services that have to stay available 24x7. This "dirty" flash results in access path rebuilds ranging anywhere from 10 minutes to 30 minutes depending on the level of activity on the source production system.

The switch to the HA system using the flash from the production system is controlled automatically by batch jobs on both the production and HA systems.

At the present time, the batch jobs have no way to detect when the access path rebuilds complete. This has become a problem when an access path rebuild conflicts with the application running as the application becomes unresponsive, thus causing customer complaints.

We have built 15 minute delays into the batch jobs and hope that these delays are sufficient but have no way to detect when an access path rebuild is complete and therefore still get issues on occasion.

Note:
We have done the following to minimise the impact of access path rebuilds;
1. Shutting down as many services as possible on the source system. This minimises activity when the flash copy occurs.
2. Used database file attribute RECOVER(*AFTIPL) on all database tables. This ensures that the rebuild is started at the soonest possible moment and minimise customer impacts.
3. We have increased the number of database server jobs which process access path rebuilds.

Despite these actions, we still have no supported way of detecting when access path rebuilds complete within a batch job.


Idea priority Medium
  • Guest
    Reply
    |     Feb 27, 2021

    IBM will use this request as input to planning but no commitment is made or implied. This request will be updated in the future if IBM implements it.

  • Guest
    Reply
    |     Jan 6, 2021

    IBM has received the requirement and is evaluating it. IBM will provide a response after evaluation is complete.

  • Guest
    Reply
    |     Feb 19, 2018

    The CEAC has reviewed this requirement and recommends that IBM view this as a medium priority requirement that should be addressed.

    An IBM i Service might be a very nice solution.

    Background: The COMMON Europe Advisory Council (CEAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CEAC has a key role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community, and has therefore reviewed your RFE.

    For more information about CEAC, see http://www.comeur.org/i4a/pages/index.cfm?pageid=3285

    Dawn May - CEAC Program Manager

  • Guest
    Reply
    |     Jan 2, 2018

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Db2 for i
    Operating system - IBM i
    Source - None

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Availability, Recovery
    Operating system - IBM i
    Source - None

  • Guest
    Reply
    |     Dec 14, 2017

    If the index builds are asynchronous, you might try querying QRCYnnnnn/QADBERAP. In each IASP is a QADBERAP file.

  • Guest
    Reply
    |     Nov 2, 2017

    In response to the question, "Would a message to indicate "Access Path Rebuild complete" satisfy the need?" Yes, where would the message be? As long it is something that can easily be monitored from a batch job then this is sufficient. The driver here is to detect when the access path rebuild process is finished rather then individual rebuilds, thus an overall completion message should suffice.

  • Guest
    Reply
    |     Oct 25, 2017

    Would a message to indicate "Access Path Rebuild complete" satisfy the need?

  • Guest
    Reply
    |     Aug 15, 2017

    The CAAC has reviewed this requirement and recommends that IBM view this as a “nice to have” low priority feature.

    Background: The COMMON Americas Advisory Council (CAAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CAAC has a key role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community, and has therefore reviewed your RFE.

    For more information about CAAC, see www.common.org/caac

    For more details about CAAC's role with RFEs, see http://www.ibmsystemsmag.com/Blogs/i-Can/May-2017/COMMON-Americas-Advisory-Council-%28CAAC%29-and-RFEs/

    Dawn May - CAAC Program Manager

3 MERGED

Create SQL View or Table Function for EdtRbdAP

Merged
When we refresh Test Environments via RSTOBJ we want to know EdtRbdAP's estimated completion time so we can: 1) Wait for it to complete, and 2) Send status updates. "Rebuilds estimated to complete in ~25 minutes at 8:30pm ET...""Rebuilds estimated...
about 1 year ago in IBM i / Db2 for i 1 Future consideration

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