Is There A Way To Allocate More Than 2Gb For Large Hash Joins Per Process?
(Doc ID 2070261.1)
Last updated on FEBRUARY 18, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
Despite increasing the OS limitations and setting large values for _pga_max_size and _smm_max_size, the query goes to disk after using ~2GB of memory in workareas for hash join operations in serial mode.
Is there any method available to allow to a single process acquire 10 GB or more of process memory for large hash join operations?
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!
In this Document