Cyral, The frame is nothing more than the component
that holds the equipment. Oracle can support upto 256
instances in a RS6000/SP environment. I have setup 16
instances on 16 nodes in SP environment and have seen
upto 100 instances on 100 nodes. This is the long
answer to you question which is
Hi
I am sorry if someone has replied this
But can someone PLEASE tell me
if IBM supports OPS
across their SP frames.
or only support OPS WITHIN SINGLE SP frame?
Thanks
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Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: Cyril Thankappan
INET: [EMAIL
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Actually, failover (TAF - for connection, session, and select) works fine
without MTS. I've built six 8i OPS systems in the last year or so using TAF
without MTS. (None had direct Java clients though.)
MTS is not required for the older multiple
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Hi
SOrry about this..
But I have actually seen the Net8
(shipped with Oracle 8.1.7 client CD)
using Oracle 8.1.6 Enterprise Edition Database Server,
where the failover works WITHOUT mts.
However, Gopal, can you please clarify
whether
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Hi,
on AIX platforms, Oracle actually uses it's post wait driver
architecture.
It's a substitute for the operating system's semaphores. The background
is
that due to an exhaustive overhead dealing with OS semaphores (context
switch),
Oracle
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Gopal et al,
One of the main differences between Oracle on HP-UX/Solaris/Sequent and
Oracle on IBM is their use of the Post-wait driver which uses a
'test-and-set' lightweight mechanisn instead of semaphores. The other
difference (in this OS
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Don, failover, dispatcher cross registration and server load balancing
require MTS. Second, I'm not on AIX, that is why I was guessing about
semaphores.
Here are my versions:
SQL*Plus: Release 8.1.7.0.0 - Production on Thu Sep 13 15:36:53 2001
locks. You will have to
read the manuals to understand this one.
-Original Message-
From: Pablo ksksksk [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 12, 2001 8:00 PM
To: Multiple recipients of list ORACLE-L
Subject: RE: OPS instalation - pretty urgent
Hi Mladen Thanks
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Hi,
You are right. IBM uses a light weight process
(post wait driver??) instead of typical System V
semaphores. It is dynamically allocated and
you don't need to explicitly set them in
sys config files (Right John??)
Best Regards,
K
Uh, oh! Did you just say OPS? First of all, go to Oracle
and ask them for EXACTLY the OS version you need and the
required OS patches. Second, plan your configuration: private
rollback segments, private log threads, locally managed tablespaces,
you should know exactly how much space do you need
Sorry I forgot to ask this one too:
In the manual says that one OPS advantage is High
Avaiability, now, in a client-server application,if
node1 goes down, how do clients that ussually
connect to node1 access the DB now?
How do they know that node1 is down and that now
they have to connect
Hi Mladen Thanks for the answer.
I'm already doing some reading...
I'd like to ask you some questions about your answer
Here I go. Please be nice if I'm wrong
1)Log threads have to be private to each instance,
right? there's no Public thread I think.
2)Is it usual to use PUBLIC rollback
I'll add my 2 cents worth here... I think perhaps the esteemed Mladen is
exaggerating a wee bit ;-)
In addition to the Oracle 8i Concepts Manual, you will want to read the Oracle
8i Parallel Server Concepts Manual -
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