We were impacted by an NPS failure due to the Postmaster task failing. Postmaster restarted successfully. There is a known fix for this. After the restart we noticed a large log recovery lag (36 hours) due to a long-running UOW that had no commits in it. The tables in the UOW had no subscriptions. This UOW was holding up replication for all subscribed work. We are asking that a change be made to CDC replication to ignore processing for UOW that are not subscribed and process only UOW that are subscribed in order to limit lag time. See case TS002525358 for more details.
|Who would benefit from this IDEA?||Anyone needing timely access to queries requiring acceleration after Db2 Analytics Accelerator for z/OS system failures.|
How should it work?
We are running IDAA V5.1. According to case TS002525358, IDAA V7.1 and Integrated Synchronization (when it becomes GA) will not process unsubscribed UOW work to avoid unnecessary lag times. We are asking that this functionality be incorporated into IDAA V5.1.
|Priority Justification||The medium priority was chosen as this is not a frequently occurring issue, but when it does happen it can have a big impact on data currency for queries requiring acceleration.|
|Client Name||CVS Health/Aetna|
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