Anyone have coments on the shared mmap?
What could happen if a file is mmaped by say, 3000 different processes in a 4
node cluster, and someone went there and changed its contents? This is a
possible situation on a large production APPS environment, or any forms based
application.
Regards,
Luis
Alexei_Roudnev <[EMAIL PROTECTED]> wrote:
It's really a good question. We should know _which exactly
combinations are used internally_. (OS, File System, NAS/SAN).
In reality therse particular combinations are most stable and preffered ones
- no matter what is _officially certified_.
----- Original Message -----
From: Luis Freitas
To: [EMAIL PROTECTED] ; [email protected]
Sent: Wednesday, August 22, 2007 6:46 PM
Subject: Re: [Ocfs2-users] Urgent :: 11i on OCFS2.. I mean
APPL_TOP,COMMON_TOP etc..
Prabhakar,
This post is only my personal opinion. I do not work for Oracle nor have
any close contact with the support and development groups. But I never heard of
anyone using this combination.
This is kind of a gray area, since Oracle usually provides support for
OCFS2 in conjunction with RAC database. The APPS people is a different group
internally at Oracle, so even if this is officially supported you could get
into situations where the support analysts start to redirect the TAR between
these groups, or could argue that since the issues are not related to Oracle
Database or Oracle database binaries they would not fix it.
I would not do it unless with a very large customer that could escalate
any issues to get a fast resolution with support. It probably is better to get
a NAS storage and map it using NFS.
That said since it is supported for the database binaries, there should
not be immediate problems with other files. The FAQ about shared APPL_TOP on
metalink says that any disk sharing technology can be used.
One thing that comes to my attention is that Oracle Forms uses memory
mapped files extensively. I dont know how completelly this is implemented on
OCFS2 and if it works well. Anyone can comment on this? There are some posts
on this list about problems with shared mmap.
Regards,
Luis
[EMAIL PROTECTED] wrote:
All,
Is Shared APPL_TOP certified with 11i on OCFS2? Please send me the information
as soon as possible..
We have two RAC nodes on ASM file system and one middle tier right now. Now
want to setup Shared APPL_TOP so need your help whether this is a certied with
OCFS2 or not.
OS is SUSE 9 SP3.
Regards,
Prabhakar Tammina.
(614)598-3487(cell).
_______________________________________________
Ocfs2-users mailing list
[email protected]
http://oss.oracle.com/mailman/listinfo/ocfs2-users
---------------------------------
Got a little couch potato?
Check out fun summer activities for kids.
---------------------------------
_______________________________________________
Ocfs2-users mailing list
[email protected]
http://oss.oracle.com/mailman/listinfo/ocfs2-users
---------------------------------
Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel
and lay it on us._______________________________________________
Ocfs2-users mailing list
[email protected]
http://oss.oracle.com/mailman/listinfo/ocfs2-users
