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EJB knowledge required for OCEJWSD

 
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Hello ranchers , I am preparing for OCEJWSD (1zo-897) exam which requires some knowledge of EJB.

I am reading Mikalai OCWSD6 notes which talks about EJB , I want some background knowledge in EJB to understand the study guide.

Can you point me to some good source which will get me there in an easy way. Their are different versions of EJB also which version is covered in OCEJWSD

 
Bartender
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The Java EE tutorial EJB chapter will give a good introduction.

Regards to web services, only stateless EJB can become web services.
 
Mahtab Alam
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Thanks for your reply. Will Javaee ejb tutorial will be enough
 
K. Tsang
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Depends.

Working level of stateless EJB is probably what you need. Yet knowing the other types (stateful and message driven) won't hurt.
 
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For this web service exam, you may need to know the fact that each method invocation of a stateless bean is independent of each other.
For example, if you have an instance variable and one method invocation sets a value to it.
The next method invocation may not get the same value because this second method invocation may be invoked on a different stateless bean in the bean pool.
 
Greenhorn
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Just got done failing! :-)

Yes, you must have a basic understanding of EJBs to include security and deployment. You must know the particulars of JAX-RS and JAX-WS as implemented as EJBs.

Not in-depth, but you need to know. Also, see my thread on why I failed. Don't neglet rote "wikitrivia" memorization on the topics. If it's a webservice topic and is described using a bulleted list (memorize the darn list).
 
Himai Minh
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No worry.

I highly recommend you to use Ethuware mock exams and EPractice mock exams. They are helpful.
Also, try to get some mock exams from MZ. Send MZ a email to request for his mock exams.
Last but not least, try to google some free mock exams.
Practice is a must.
 
It is sorta covered in the JavaRanch Style Guide.
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