?
Solved

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

Posted on 2009-07-01
4
Medium Priority
?
1,454 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 2000 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

Get your Conversational Ransomware Defense e‑book

This e-book gives you an insight into the ransomware threat and reviews the fundamentals of top-notch ransomware preparedness and recovery. To help you protect yourself and your organization. The initial infection may be inevitable, so the best protection is to be fully prepared.

Question has a verified solution.

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

In my business, I use the LTS (Long Term Support) versions of Linux. My workstations do real work, and so I rarely have the patience to deal with silly problems caused by an upgraded kernel that had experimental software on it to begin with from a r…
1. Introduction As many people are interested in Linux but not as many are interested or knowledgeable (enough) to install Linux on their system, here is a safe way to try out Linux on your existing (Windows) system. The idea is that you insta…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…

719 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