-
Jurij Modic
ASCII a stupid question, get a stupid ANSI
24 hours in a day .... 24 beer in a case .... coincidence?
-
I was just thinking about it today.
Why do we need to have oracle fail safe and Microsoft windows clusters set up in the first place if you can afford a downtime of around 15-20 minutes during normal business hours and you dont care about night time issues.
We can have 2 similar machines and a shared storage between them. One machine is switched off and you install oracle software , create the services for the database stored on the shared storage. The other idle/switched off machine also has oracle software installed and services created to point to the same database. If one fails you simply switch on the other computer.
The above setup should work if you dont need Transparent Application Failover (I am assuming here that Oracle Fail safe Provides TAF).
Please confirm if thats possible or not.
Thanks
Last edited by ronnie; 10-23-2002 at 04:39 PM.
Ronnie
ronnie_yours@yahoo.com
You can if you think you can.
-
Hey, if you look it that way, then why not simplify it a bit further?
You have two simmilar machines. One is switched off, doing nothing, actually it even doesn't have any disk installed (so you don't even have to bother with installing Oracle software and configuring services)!!!! The other one is normaly configured database server. In case it fails, you simply pull out all of its disks and pull it into the empty one, start it end everything is like nothing happens. I'd call this "manual clustering".
However I'm sue I would not go for this option. And for yours neither, for that matter!
Jurij Modic
ASCII a stupid question, get a stupid ANSI
24 hours in a day .... 24 beer in a case .... coincidence?
-
Originally posted by jmodic
Hey, if you look it that way, then why not simplify it a bit further?
You have two simmilar machines. One is switched off, doing nothing, actually it even doesn't have any disk installed (so you don't even have to bother with installing Oracle software and configuring services)!!!! The other one is normaly configured database server. In case it fails, you simply pull out all of its disks and pull it into the empty one, start it end everything is like nothing happens. I'd call this "manual clustering".
However I'm sue I would not go for this option. And for yours neither, for that matter!
Thanks a lot jurij,
My asking the question didnt mean that i want to go for a simple solution. It was just a thought and I was wondering whether its possible or not.
Our company does not have a lot of money and we can afford a little bit of downtime.
The solution is simple and affordable but I am just curious to know about the drawbacks of such an implementation.
I know that automatic failover is not possible in the above scenario and I would really appreciate if you list some more drawbacks.
Thanks
Ronnie
ronnie_yours@yahoo.com
You can if you think you can.
-
Speaking about affordable budget. I'm not sure if WinNT/2K cluster software has to be purchased/licensed separatly, but I know that Oracle FailSafe is free of charge. So in case Microsoft clustering is free, all you'll have to invest into cluster+FailSafe configuration is two additional network cards for interconnect! (As I understand, you allready have two servers, you allready have shared storage, so basicaly you have all HW needed)
As I understand your situation you currently have two machines (one running database, other one running OAS), both active. So if you go for your solution as I understand it (you said: "One machine is switched off and you install oracle software...."), you'll have to buy another brand new machine that will do nothing but sit and wait untill you manualy start it in the case of failure. So how can this be cheaper than simply connecting two existing machines into a cluster?
Jurij Modic
ASCII a stupid question, get a stupid ANSI
24 hours in a day .... 24 beer in a case .... coincidence?
-
I read somewhere that you need Win2000 advanced server to do clustering. So if you don't have it you would need to be licensed for it. If it was my site I would definitely cluster though. IMHO, even though you say you can handle the downtime. What if no one is available to fix your system. If a system is worth running than it is worth backing up and having a backup system for it. Especially if you are splitting the load accross two servers to begin with.
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
|
Click Here to Expand Forum to Full Width
|