From my understanding, each enterpirse bean has a single threaded container
manage it. If two clients request the same enterprise bean at
the same time, then one of them will wait or fail since a single threaded
container can only handle one request at a time. Is this true?

Does anyone know of any good articles, which describes DAO layer performance
tuning? I'm having some performance issues with data access through this
layer. Some advice on DOs and DON'Ts are welsome.
Thanks in advance,

I'm building a data synchronization process that must be contained
within a transaction.  Tables from two different databases (Oracle and
Informix) will be updated during the process.  I'm thinking I can't do
this with JDBC type transactions since they are based on the Connect

I've seen a number of articles where a facade session bean caches an
instance of an entity bean local home interface in a session bean field.
Where a entity bean local home interface instance is required in multiple
situations is it valid to create a separate singleton class that ...

i use Jboss 3.2.1 and eclipse with lomboz. i tried to add the following query to my bean:
* @ejb.finder
*    query="SELECT OBJECT(a) FROM minfo a where a.filename LIKE ?1"  
*    signature="java.util.Collection findByFilename(java.lang.String filename)"

i am new to jsp and was wondering if there is a way to do this. either
call a c function or call an executable. thanks

Im designing a few new beans for an application some of which are based on combo boxes. I've just
started using beans and even though I know how they work im not sure about the design
idea's/patterns to employ. Several of the beans basically start with an empty box but when the ...

I am using xdoclet to generate the EJBs and the DD. Last week I got through
the xdoclet documentation and was reading about the weblogic.finder tag but
I didn't manage to get it working. Can anyone please post an example how to
use this tag?

Am I right in thinking that an EJB JAR using CMP can only use a single JDBC
connection? (In my case I'm using JBoss 3.x)