EJB3 Pros and Cons

What are the advantages and disadvantages of using EJB3 in not-too-big projects?
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kevorkgtAuthor Commented:
The article compares two methods for migrating a Java service to EJB.
Mayank SAssociate Director - Product EngineeringCommented:
>> advantages

Transaction management
Persistence/ Database relational mapping
Session/ state management (in case of stateful)
Creation/ passivation/ maintenance etc

All done by the container.

>> disadvantages

Heavy to use
Uses RMI so serialization/ de-serialization will happen (unless you use local interfaces)

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kevorkgtAuthor Commented:
Why is EJB "heavy to use"?
Mayank SAssociate Director - Product EngineeringCommented:
Because the containers will typically take more space for install, deal with databases for persisting the EJBs, RMI for serialization/ de-serialization when EJBs are called remotely, etc
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