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Status Under review
Workspace Db2 Analytics Accelerator for z/OS
Created by Guest
Created on May 25, 2026

RELATED IDEAS

Enable/Disable Acceleration for Accelerator‑Only Tables (AOT)

Currently, Db2 Analytics Accelerator / Data Gate allows creating Accelerator‑Only Tables (AOTs) on multiple accelerators (via accelerator groups) for availability purposes. However, once defined, all AOT instances must be populated and maintained consistently across all accelerators, which introduces significant operational overhead.

Unlike accelerator-shadow tables, AOTs are not supported by SYSPROC.ACCEL_SET_TABLES_ACCELERATION, meaning there is currently no mechanism to temporarily disable or suspend their usage on specific accelerators. 

Enhance existing functionality (e.g. SYSPROC.ACCEL_SET_TABLES_ACCELERATION) or introduce a new interface to:

Allow ENABLE / DISABLE of AOT tables per accelerator

Possible behavior:

  • ENABLE → AOT is available for queries and DML on the selected accelerator
  • DISABLE → AOT is:
    • not accessible for queries
    • excluded from accelerator routing
    • not required to be populated/maintained

Use case:

 AOTs defined across multiple accelerators for HA:

  • Accelerator A → actively used and populated
  • Accelerator B → reserved for DR or future use

With this enhancement:

  • AOTs can be defined on both accelerators
  • AOTs remain disabled on Accelerator B
  • No need to continuously replicate data
  • AOTs can be enabled on demand (e.g. failover, maintenance)
Needed By Quarter

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