Re: (Fwd) Re: Oracle 8i and clustering

I don't know exactly the context in which you heard this (NT cluster specific?), but rest assured that OPS is not going to be "replaced", except in name. The current party line is that "real application clusters" is a radical departure from OPS. It simply isn't true. RAC is a very major upgrade/rewrite and renaming of OPS, not a different technology. There seems to be a *LOT* of misinformation floating around on this issue and much of it seems be coming from Oracle's marketing machine.

-Don Granaman
[certifiable OPS OraSaurus]

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Wednesday, July 25, 2001 9:30 PM

>
> ------- Forwarded message follows -------
> To: Ali Mesdaq <AMesdaq_at_STBERNARD.COM>
> Date sent: Wed, 25 Jul 2001 14:12:34 -0700
>
> I can't imagine that installing the oracle executables on
> shared storage would be a good idea.
>
> see below for an Oracle tech note.
>
> note that the shared storage has to be "raw".
>
> I think I recall seeing a discussion about how OPS is going
> to be obsoleted and replaced by a better cluster technology.
>
> I hope you can talk to Oracle Tech Support if you are the
> one doing this. I've heard that OPS is *the* nastiest Oracle
> configuration to setup.
>
> regards,
> ep
>
> ---forwarded message---
>
> http://metalink.oracle.com
>
> Doc ID:
> Note:119312.1
> Oracle Parallel Server on Windows NT
> Type:
> BULLETIN
> Status:
> PUBLISHED
>
> Content Type:
>

TEXT/PLAIN
> Creation Date:
>

07-SEP-2000
> Last Revision
Date:
>

05-FEB-2001
>
>
>
>
> PURPOSE
> -------
>
> This article documents how Oracle Parallel Server is implemented on
Windows NT.
>
>
> SCOPE & APPLICATION
> -------------------
>
> This document is intended for people who administer Oracle Parallel Server
on
> Windows NT.
>
>
> Oracle Parallel Server on NT
> ----------------------------
>
> 1.OVERVIEW OF SYSTEM ARCHITECTURE
>
> ...
>
> 2.IMPLEMENTATION OF SHARED DISK
>
> Oracle Parallel Server requires a shared disk subsystem to contain
shared partitions that are raw.
> As Windows NT does not support a proper distributed file system,
Oracle bypasses it by using raw devices. This
> allows nodes running different instances to access shared disks.
Data files, redo log files, and control files
> are stored on the raw devices. The shared disks are then a
collection of unformatted raw devices.
>
> Raw devices are created on a disk that does not have a primary
partition and has only one extended partition.
> A raw partition is created when an extended partition is created and
logical drives are assigned to it without
> applying any formatting. The Windows NT Disk Administrator
application allows you to create an extended partition
> on a physical drive.
>
> An Extended Partition points to raw space on the disk that can be
assigned multiple logical drives for the
> database files. It avoids the four-partition limit by allowing you
to define large numbers of logical drives to
> accommodate applications using Oracle on Windows NT. Logical
partitions can then be given symbolic link names to free
> up drive letters. This makes Oracle Parallel Server on Windows NT
more scalable.
>
> You need to create raw devices if you are creating a database
manually,or using the Oracle Database Configuration
> Assistant to create the files for the database. However, if you are
using the Oracle Database Configuration Assistant,
> a precise number of raw devices must be set up.
>
> Raw devices are created prior to installation and creating a
database.
>
> 3.DLM CONFIGURATION
>
> The Distributed Lock Manager (DLM) maintains a list of system
resources and provides locking mechanisms to
> control allocation and modification of Oracle resources. Resources
are structures of data. The IDLM does not control
> access to tables or anything in the database itself. Every process
interested in the database resource protected by the
> IDLM must open a lock on the resource.
>
> ...
>
>
> RELATED DOCUMENTS
> -----------------
>
>
> Oracle7 Server Release 7.3.3 for Windows NT Getting Started
> Oracle Parallel Server Release 7.3.3 for Windows NT Getting Started
> Oracle8 Release 8.0.3 for Digital Alpha Windows NT Getting Started
> Oracle8i Parallel Server Administrator's Guide
> .
>
>
> Copyright (c) 1995,2000 Oracle Corporation. All Rights Reserved. Legal
Notices and Terms of Use.
>
>
>
> -----
>
> On 24 Jul 2001, at 13:51, <AMesdaq_at_STBERNARD.COM>) wrote:
>
> Date sent: Tue, 24 Jul 2001 13:51:48 -0700
>
> > Does anyone know the proper way of installing oracle 8i on a cluster
setup.
> > i have 2 compaq computers in a cluster sharing 4 raid arrays. they are
> > running win nt 4 enterprise edition. the cluster is already setup. but
when
> > i install oracle should i install to the shared volumes or install
oracle
> > locally on each server and just keep the data on a shared volume? any
help
> > would be nice. thank you
> >
>
>
> ------- End of forwarded message -------
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Eric D. Pierce
> INET: PierceED_at_csus.edu
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Don Granaman
  INET: granaman_at_home.com

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