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Status Future consideration
Components Q Replication for Z
Created by Guest
Created on Feb 9, 2024

Improvement of QREP to allow replication of data generated in the Db2 LOG by the LOAD utility with SHRLEVEL NONE LOG YES.

Need: Meet the growing demand for data replication from Banco do Brasil

-Scenario:- Banco do Brasil is a large user of data replication using Qrep (IIDR) + Db2 v13 for z/OS, 
there are thousands of tables replicated from production environments for decision-making environment.
To handle high volumes of data received to input on the main environment, we use the LOAD utility 
with RESUME YES SHRLEVEL CHANGE LOG YES options, is the only way to pass the data inserted to QREP via Db2 LOG,
causing high volume of records recorded in LOG, high volume of INSERTS in parallel with ONLINE generating contentions in
GROUP BUFFER POOL DB2. The alternative to minimize de contention is to use LOAD SHRLEVEL NONE, but it requires a full refresh 
(unload and load of the entire table, many with billions of rows), because the LOG records generated (shrlevel NONE) are not usefull 
for QREP, this process is time-consuming and more complex, because of operational issues and time window. 
The problem is the same with the use of tools such as IDAA's InSYNC and Datagate,
which are not sensitized by loads with LOAD SHRLEVEL NONE.

-Requested improvement: Possibility for data loaded via LOAD SRHLEVEL NONE LOG YES to be
read by QREP from pages written to the DB2 LOG.

Needed By Yesterday (Let's go already!)
  • Admin
    Apr 11, 2024

    Hi --Thank you for your continued Replication support and raising this IDEA. We have reviewed this and agree this is a very valid and worthwhile enhancement,. This will require a change at both Db2 & Qrep . We are currently evaluating different approaches / design options. We will size the preferred option for including in the roadmap/. I will keep you updated on progress, Thanks