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IBM Data Platform Ideas Portal for Customers


This portal is to open public enhancement requests against products and services offered by the IBM Data Platform organization. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


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Status Under review
Workspace DataStage
Created by Guest
Created on May 28, 2026

Add SQL pushdown support for DB2 for z/OS connector in DataStage NextGen

Flows using the db2zos connector compile and run purely as px-runtime OSH with no pushdown. ELT mode does not support db2zos, so no predicate or transformation is pushed into DB2 for z/OS. All data is extracted to the parallel engine before any filtering occurs. Notably, the DB2 (LUW) connector already supports pushdown in part against DB2 for z/OS databases.

Enable ELT / SQL pushdown for the db2zos connector, at minimum predicate (WHERE-clause) pushdown so filtering runs on DB2 for z/OS before extraction, ideally extended to join, aggregation, and projection pushdown. 

DB2 for z/OS holds large, high-volume datasets. Without pushdown, full result sets are transferred to the ETL engine, driving up network and mainframe MIPS/CPU cost and pipeline runtime. Especially painful for incremental loads where only a small filtered subset is needed. Predicate pushdown would cut transferred volume by orders of magnitude and bring db2zos in line with capabilities already available through the LUW connector.

Needed By Quarter