Re: Please help: Oracle9i/AIX5.2/Veritas vxvm raw devices Problem

1. Fuentes wrote:

>
>
> Thanks for clarifying this. Howard is correct. After 9.2.0.2 raw devices
> are not required for RAC. We can use OCFS.

Not quite. Cluster File Systems have been around for quite some time, and were perfectly useable with 9iR1. Tru64 was the first certified Unix Cluster File System, and that was most definitely for 9iR1.

>
> However, for this particular setup, I need to put the database files
> on Veritas raw devices. And I don't know if the Oracle Software needs to
> live in a Veritas FS vxfs, instead of the jfs where is now.

The Oracle software can *not* be installed onto a raw device. Period. It consists of over 60,000 files, each one of which would require the creation of a separate raw partition. And a lot of them are text files which can't be stored on a raw partition in any case.

If you have raw devices for your shared disk storage, then neither the Oracle installation itself, nor archive logs, nor the init.ora can be shared between instances using the raw device.

> A. Fuentes
> 512-297-9937
>
>
> "Daniel Morgan" <damorgan_at_x.washington.edu> wrote in message
> news:1063948891.425987_at_yasure... Howard J. Rogers wrote:
>
> A. Fuentes wrote:
>
>
> Thanks again for trying to help
>
> A fact that may matter here is that, I do have the Oracle9i Software
> installed in an AIX jfs filesystem and only the database files are the
> ones going to the Veritas Raw partitions. Perhaps it would make the
> difference if I would had the Oracle Software installed on a Veritas
> Filesystem and then try to use Veritas Raw devices for the database files.
> In Oracle RAC this fact is transparent, ie the Oracle software can live in
> a different filesystem from where the datafiles live ( Raw devices are
> required in RAC).
>
>
> No they're not. That's what cluster file systems are there for.
>
> Regards
> HJR
>
> Howard is correct. You do not need raw devices for RAC.
>
Received on Mon Sep 22 2003 - 06:09:06 CDT