My Oracle Support Banner

High Memory Usage on Server from Oracle Background Processes - Parallel Query Server Processes (Doc ID 2948724.1)

Last updated on JANUARY 27, 2025

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

High memory usage found on server from oracle background processes by parallel query server processes, ora_p###:


$ ps -eo pid,ppid,ruser,cmd,%mem --sort=-%mem | head -40
   PID    PPID RUSER    CMD                         %MEM

558183       1 oracle   ora_p000_<SID>           53.3
558185       1 oracle   ora_p001_<SID>           53.2
558189       1 oracle   ora_p003_<SID>           52.9
558187       1 oracle   ora_p002_<SID>           52.8
562508       1 oracle   ora_p004_<SID>           51.5

...

Changes

 

Cause

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
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.