This video explains how to increase Java heap size in IICS for Cloud Data Integration jobs.

For further information, refer to the following documents:

https://knowledge.informatica.com/s/article/336913?language=en_US

https://knowledge.informatica.com/s/article/472394?language=en_US

https://docs.informatica.com/cloud-common-services/administrator/current-version/data-integration-performance-tuning/data-integration-performance-tuning-overview/best-practices/secure-agent-machines/infa_memory-and-jvm-options.html