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We use a replication solution which utilizes DB2 LUW Federation as a link between DB2 z/OS (source database) and Postgres (target database).
So the picture is as follows:
SQL Replication 11.4
-Db2 z/OS 12 on mainframe,
-Db2 LUW Federation 11.5.8,
-PostgreSQL JDBC Driver (FluidQuery),
-Postgres 13 in GCP,
This configuration relies on 1-Phase commit as Federation doesn't support 2-Phase commit for Postgres. In case of failure - when Db2 or SQL replication agent on the source wasn't stopped in a controlled manner (due to crash, user mistake etc.) - we experience data inconsistency between source and target tables (Replication tries to insert data which is already present at the target - which results in SQLCODE -803 and replication stops with an error).
We believe this improvement will prevent us from this kind of errors.
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