For this purpose OC4J 11 counts as a Java EE 5 application server.
When I say "J2EE", the emphasis is on the "2", not the "EE".
I know that some people still use the outdated "J2EE" label for describing all
EE appservers, but this is incorrect usage.
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OC4J 11 supports EJB3. So, you can use EJB3 beans with Seam if you deploy
there. See the examples/jee5 example for more details.
If you are stuck with J2EE 1.4 version of OC4J, you cannot use EJB3 session
beans. Instead, you use POJOs with Seam managed transactions. They are really
the same as