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Linux: How to Check Current Shared Memory, Semaphore Values (Doc ID 226209.1)

Last updated on MAY 05, 2021

Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 8.1.7.0 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Red Hat Advanced Server
Linux x86-64
Red Hat Enterprise Linux Advanced Server Itanium
Linux Itanium
***Checked for relevance on 07-Nov-2011***
***Checked for relevance on 10-Apr-2013***
***Checked for relevance on 18-Oct-2017***


Goal

This article explains how to check the current limits on Shared Memory and Semaphore settings on your Linux system.
This is intended for Linux system administrators and Linux DBA's with system administration skills.

Solution

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In this Document
Goal
Solution
 Why Do I Need To Alter These Values?
 Semaphore Settings
 Shared Memory Settings
 POSIX Command Line Interface
 RELATED DOCUMENTS
References

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