[LUNI] Differences btwn RHE3 and RHE4

[sobolak at gmail.com]

Hi --

We're moving a major app from citrix to a web/java app server environment on Linux. (Yeah!) The vendor has certified the app on RHE4, but our prod environment is RHE3. 

Can anyone explain the major differences between language either a PHB will understand or what my Unix team, who know Unix fairly well but not Linux, might understand?  

(I have a good english2PHB converter available--it's a script called "me".)

Brian
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