OAS Server Clustering

mpeacock

Member
We are looking at maximising the Web Server performance on our E812 Tools Release 8.96.1.0 setup. All servers involved - Application, Database and Web are Windows Server 2003 and the database used is MS SQL Server 2005 Enterprise Edition with SP1. We currently have one OAS Web Server (10.1.2.0.2)with two 1GB jvm's - one for Dev and one for Production. Total Ram on the Web Server is 6GB and is running Server 2003 Enterprise Edition with 2 Dual Core cpus.Total users at any one time on the web server would be 50.
We are purchasing another identical server to add as a clustered server. We have been informed that the clustering feature within OAS is not functioning correctly and that Oracle is aware of this. It has been suggested that we need to use Microsoft Clustering to implement a horizontal cluster.
Does anyone have any experiences they can relate with this option or any knowledge of the issues associated with the OAS clustering feature?

Thank you in anticipation!
 
If you're talking about stateful failover at the application layer, then you are right, OAS cluster will not do that for you with E1. However, neither will WAS. It's a limitation of the E1 application not the Application Server itself. Not sure how MS Clustering will fit into this equation, unless you just mean for the backend DB? Or do you mean MS Load Balancing?

Now if you want to use OAS clustering for 1.) ease of administration 2.) load balancing, then it works just fine. I've done several implementations of OAS cluster without issue.

While OAS cluster will give you application load balancing, you'll probably want to take a look at some frontend lb for your web server, like WebCache or something hardware based, or as simple as DNS. All of which work.

Hope that helps.
 
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