<p>Oracle purchased BEA and their WebLogic suite of tools. They still have a competing product in their own 10gAS Application Server. Both are <a href="http://en.wikipedia.org/wiki/Java_Platform,_Enterprise_Edition" rel="nofollow noreferrer">Java EE</a>, enterprise grade, servers. While it make take some time due to maintenance agreements, it would be unusual for them to continue to produce two products within the same architectural space. So...</p>

<ol>
<li>Will they retire their previous application server in favor of WebLogic?</li>
<li>Is WebLogic the one that will be retired?</li>
<li>How long of a process is this likely to be? Years?</li>
</ol>

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<p>What have they done with PeopleSoft vs. Oracle Applications? Likely the same pattern will be followed.</p>

As you say, it would be unusual for them to maintain two products within the same architectural space. I don't know Java application servers, but given the climate of financial markets, and that it would probably take lots of money to maintain two such application servers, I would say it's a foregone conclusion that one of the products will be cut, and sooner rather than later at that (as soon as the cost of settling breach of maintenance contracts falls below what it costs to maintain the outgoing product). As for which one will go, my bet will be on WebLogic because it "wasn't invented here"...