Re: RAC

On Aug 13, 7:59 am, DJH <nos..._at_nospam.com> wrote:
> Is a cluster file system a prerequisite for RAC files or will OCRS
> handle this task for CRS control files as well as database data/control
> files?
>
> Thanks

A shared storage technology is a prerequisite for RAC.

There are three possible shared storage technologies.

1. Raw
2. ASM
3. A cluster file system

Oracle provide (2) and OCFS2 is their offering in respect of (3), though 3rd party commercial cluster file systems are of course available.

You can't do RAC without picking one of these options, but you are not obliged to pick option 3.

The Oracle Clusterware installation will detect which shared storage technology is in use and will respond appropriately. But if it doesn't detect one or other of these three options, it will complain loudly and refuse to proceed. Received on Mon Aug 13 2007 - 00:50:08 CDT