Oas vs weblogic

Hello All
1. what are differences betwenn oas and weblogic?
2. can be multiple Weblogic deployments on a single server, thus allowing WLS(webloc server) clustering on a single multi-threaded box. Doing this will save hardware? is it a standard pratice?
3. What are the technical benefits with weblogic?
4. Can VM configuration done through weblogic?
Thanks in advance
Regards
Snini

1)
OAS is the old application server from oracle which only supports JEE 1.4 where as WLS is the new Oracle application server which supports JEE 1.5 and coming.
WLS is base no the well known BEA Weblogic server.
2)
sure you can deploy multiple apps on one server or build a cluster and deploy to the cluster (multiple deployments of one app). If this saves hardware is a different question, I personally can't answer right now.
3)
WLS is the future actual and future application server from oracle. In a couple of years (>5-10) oas will be history. I'm not even sure the oracle will develop anything new for oas.
4)
Yes you can configure the VM using the WLS admin onsole. In my opinion you can configurate WLS better then oas.
Timo

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