Sunday, April 15

Oracle under CentOS 5

I'm a bit late on this one, but ...
CentOS version 5 was released the other day. For those of you unfamiliar with CentOS it is RedHat Enterprise Linux recompiled and supported by the open source community.
Pretty much RHEL for free.
I can't say there is anything *really* exciting in the new version of RedHat, sure there is Xen support and the general updated versions of the applications included.
New version of Open Office, PostgreSQL etc.

One big difference is that everything has to be NTPL threaded. NPTL threading is the first real *good* threading implementation in Linux. The old Linux threads model is way old. Although NPTL has been available (and the default) in RHEL since version 3, it is not the only supported threading model.

-So what does this mean for Oracle?
No more LD_ASSUME_KERNEL hacks.
10g is fine with this, no problem at all. However 9i will have some issues with this, the old way to get Oracle running was simply to set LD_ASSUME_KERNEL to 2.4.19 and Linux would use the Linux threads model. No go in version 5.
Big question, will Oracle support 9i under RHEL5? I'm honestly not to bothered, by the time RHEL5 is mature and tested I really hope that people have switched to 10gR2.
9iR2 has been around for a lng time now and will be for some time. But new system design implementation on 9iR2?

I've done a quick test install of Centos 5 and 10gR2 (10.2.0.1 and patchset 10.2.0.2) and the install was very painless, pretty similar to Centos 4 with a few changes in the RPM's needed.
RedHat did add a few SHM parameters to sysctl.conf so that section needs reviewing though.

9 comments:

Anonymous said...

Hello,
How could you get the Oracle installer started?
When I try to start the installation it says:

Checking installer requirements...

Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLinux-1.0, asianux-1 or asianux-2
Failed <<<<

Cheers,
Elif

Anonymous said...

I found it:
File /etc/redhat-release should be edited to contain:-
redhat-4

WoW Gold Guides said...

nice post!

Anonymous said...

runescape Server Private Servers

Ephesus said...

I loved every moment of our tour. Istanbul, cappadocia and ephesus are fantastic city. We saw so many historical places and guide was very informative. We definitely recommend it. http://www.packagetoursturkey.com - http://www.touroperatoristanbul.com We visited Istanbul for the first time on your tour turkey tours we are from Cappadocia tours Greece and we just loved it! istanbul tours We finally were able to see sights that we had only heard from istanbul tourism friends who visited I have to say that this trip was fantastic. I had a great time in Turkey. Everything went on very well actually much better than we expected istanbul travel Our guide was very friendly and ephesus tours he knew all details of history. Thanks forerything.

GamingTop100.net said...

shaiya top 200

Mrk said...

helo hii fine blogs post gooo..
istanbul ismek kursları elsanatları
Kurdele Nakısları model resimleri

mariusica said...

metin2

Unknown said...

Private Server