Teradata OTF Concurrency Limits - Teradata Vantage

Teradata® Open Table Format for Apache Iceberg and Delta Lake User Guide

Deployment
VantageCloud
VantageCore
Edition
VMware
Enterprise
IntelliFlex
Lake
Product
Teradata Vantage
Release Number
20.00
Published
October 2025
ft:locale
en-US
ft:lastEdition
2025-10-25
dita:mapPath
qrj1749167830193.ditamap
dita:ditavalPath
lli1749584660955.ditaval
dita:id
bsr1702324250454

The OTF engine operates within a configured memory range designed to handle a specific number of concurrent queries. Increasing the concurrent query limit without adjusting the JVM memory allocation could result in queries failing due to out of memory errors. Hence, it is important to have a TASM ruleset that can limit the number of OTF queries run in parallel. This can be achieved by creating a workload management ruleset to throttle queries based on these OTF Iceberg functions.

  • TD_OTFDB.TD_ICEBERG_READ
  • TD_OTFDB.TD_ICEBERG_WRITE
  • TD_OTFDB.TD_DELTA_READ
  • TD_OTFDB.TD_DELTA_WRITE