Solved

centos 5.3 kernel parameters missing, how to change/set?

Posted on 2009-07-01
4
1,440 Views
Last Modified: 2013-11-08
Hello Experts,

I just tried to install Oracle 11g (2 attempt). The install failed because these parameters were missing or not set (I am not sure)
semopm=100; semopm=32
ip_local_port_range=1024 - 65000; ip_local_port_rage=32768 - 6100
rnem_default=4194304; rnem_default=126976
rnem_max=4194304; rnem_max=131071
wnem_default=262144; wnem_default=126976
wnem_max=262144; wnem_max=131071

how do I change/set these parameters?

thx,

regards,
0
Comment
Question by:epifanio67
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 7

Accepted Solution

by:
unSpawn earned 500 total points
ID: 24760797
The values you show are sysctl values. One would add them to /etc/sysctl.conf to have them configured centrally. The values are then read on boot or when restarting networking or manually when issuing 'sysctl -e -p /etc/sysctl.conf'. Manually changing values can be done with 'sysctl -w keynname=value' but those changes won't survive a machine reboot.

* When using Oracle products their knowledge base, called Metalink, should be your first source of information. I'm suggesting this because you're listing malformed keynames (net.core.wmem_default, not rnem) and odd values (for  net.ipv4.ip_local_port_range the range is defined as "lowvalue highvalue" so no dashes and lowest int first).
0
 

Author Comment

by:epifanio67
ID: 24765994
thx unSpawn.... I have read your post 20 times... still trying to make sense of it... sorry, I am new Linux...

well, I installed the rpm packages missing. I tried to run the oracle installer again;all rpm packages check pass..  but now I am only missing one param

rnem_default = 4194304; rnem_default = 126976

could you tell me again how to change/set these?

this is all I need to complete my install... thx so much

thx,
0
 

Author Closing Comment

by:epifanio67
ID: 31599055
got it... thx so much unSpawn....

Regards,
0
 
LVL 7

Expert Comment

by:unSpawn
ID: 24768869
You're welcome!
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Recompile PHP 5.5 with zip support for a newbe 8 156
Dual boot Ubuntu middle-budget laptop for development 11 268
Ubuntu not booting - How get past GRUB? 3 112
linux redhat 7.2 10 113
This article will explain how to establish a SSH connection to Ubuntu through the firewall and using a different port other then 22. I have set up a Ubuntu virtual machine in Virtualbox and I am running a Windows 7 workstation. From the Ubuntu vi…
You ever wonder how to backup Linux system files just like Windows System Restore?  Well you can use Timeshift in Linux to perform those similar action.  This tutorial will show you how to backup your system files and keep regular intervals. Note…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question