Hi
I am sorry if my question was not put across 'well'..
Let me try figuress
Frame 1frame2
node1node1
node2node2
Question is can I take node1 from frame1 and
node1 from frame 2
and have OPS running on node1 from frame1 and
nod
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 ye
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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Author: Cyril Thankappan
INET: [EMAIL PROTECT
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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 memory
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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 hand
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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 IBM
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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,
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 Gopalakrishn
at is a problem,
allocate permanent instead of the releasable 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 ORAC
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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
(c)
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 -
http://otn.oracle.com/docs/products/oracle8i/doc_library/817_doc/paraserv.817/a
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 segmen
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 t
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 f
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