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Reducing Footprint of WebSphere v7 apppserver instance

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Hi Guys,
I am working on Retail solution and their is requirement to run that solution on a 1.2 Ghz and 1GB RAM machine typical POS machine configuration. The Application selected for this is solition is a EJB3 application and uses OpenJPA 1.2 for persistence. it needs websphere 7 for appserver. for db server derby and db2 is fine.

We are finding it hard to run WebSphere 7 on that machine as the base AppServer itself is talking around 700MB. with application and derby it is making the memory required to 1.5 GB. its NOT pratical to increase the memory on the machine as these are old machines and its very expensive to upgrade them.

We have tried WebSphere 7 provisioning but hasn't helped much. any other thoughts here?


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