9i clustering

[Kumud]

Is any body has experience in 9i clustering.
Will any body expllain how easy to manage and is it worth spending money or
any other failover solution ???

[badrinathn]

Are you looking at high availability or talking about the oracle clustering feature.

If you are talking about high availability then look at Veritas HA clustering system. I was amazed at that product. I felt it is worth buying. (I am not a veritas sales guy though).

Badrinath

[Shestakov]

Originally posted by badrinathn
Are you looking at high availability or talking about the oracle clustering feature.
If you are talking about high availability then look at Veritas HA clustering system.

About what kind of HA we are talking if we are going to use Veritas HA clustering system?
-- HA file operation.
-- HA backup/recovery file systems
-- using shared file system
...
And Veritas is a very good solution.

But if we are talking about Oracle RAC, then we are going to use:
-- load balansing,
-- failover on in a transaction level (NOT ALWAYS!!!)
-- HA database transactions
-- HA of SqlNet communications
...
There are just another solutions and another goals.

[Kumud]

I am talking about RAC in oracle 9i.
Looking for
High availabality
Hardware or software failer solution.
Also easy to manage.

Oracle claim that 9i RAC is the solution but I want to know from experienced dba.

[sreddy]

Originally posted by Kumud
I am talking about RAC in oracle 9i.
Looking for
High availabality
Hardware or software failer solution.
Also easy to manage.

Oracle claim that 9i RAC is the solution but I want to know from experienced dba.

You have the answer right there(Shestakov Reply). RAC alone is not HA Solution, Its a high availability database solution from Oracle, still you have single point of failure at hardware (not nodes but disk management) level.

You have look from both perspectives to make it real high availability system with zero down time and 100% data availability round the clock.

[Edited by sreddy on 08-05-2002 at 04:31 PM]

[Kumud]

yes, I am talking about 0% down time and 100% HA.
is 9i clustering is solution ??

[Shestakov]

Originally posted by Kumud
yes, I am talking about 0% down time and 100% HA.
is 9i clustering is solution ??

What are u lookig for?

1. 100% HA doesn't exists in real world in any way!!!

2. If u going to build system with Oracle database with
99.9999 % of availability u MUST:
-- have 99,99999 HA of all components of hardware
(disks, processors, memory, controllers ...)
-- have 99,9999 HA of OS (u have to implement clusrer decision of OS
like SUN Cluster, HP/DEC Cluster ad so on..)
-- have 99,9999 HA of file operations (like Veritas cluster)
-- have 99,9999 HA of database transactions (this is Oracle RAC)

and all components MUST be implemet TOGETHER!!! This is ~near 100% HA system.

[pando]

Originally posted by Kumud
yes, I am talking about 0% down time and 100% HA.
is 9i clustering is solution ??

that sounds pretty funny