How can I initialize a web application in a cluster

Our current test environment is a single node but we have to move to a clustered environment. We have some database initialization which we do using a 'startup servlet' with the load-on-startup marker.
Now how does this behave in a clustered environment? Will the servlet be called once or once per node?
Should we redesign the startup initialization? Are there best practices for Weblogic clusters regarding startup initialization?
btw: Weblogic 10.3
cheers,
Rob
Edited by: [email protected] on Oct 20, 2009 6:48 AM

Servlet init() will be called by each JVM the application is in, regardless if it is in a cluster or not.
If you want once per cluster behavior, you'd need to consider something like a Singleton Service, which is outside of your application OR use something like Oracle Coherence in your application that would allow you to easily check if the initialization has already occurred in another cluster member.
http://download.oracle.com/docs/cd/E12839_01/web.1111/e13709/service_migration.htm#i1051668

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