Java Interview Question and Java Beginner Tutorial - Part 5

I am developing a BMP Entity bean. I have noticed that whenever the create method is invoked, the ejbLoad() and the ejbStore() methods are also invoked. I feel that once my database insert is done, having to do a select and update SQL queries is major overhead. is this behavior typical of all EJB containers? Is there any way to suppress these invocations?

This is the default behaviour for EJB. The specification states that ejbLoad() will be called before every transaction and ejbStore() after every transaction. Each Vendor has optimizations, which are proprietary for this scenario.

Java Interview Question and Java Beginner Tutorial - Part 3

Is it possible to specify multiple JNDI names when deploying an EJB?

No. To achieve this you have to deploy your EJB multiple times each specifying a different JNDI name.

Are enterprise beans allowed to use Thread.sleep()?

Java Interview Question and Java Tutorial - Part 1

Are enterprise beans allowed to use Thread.sleep()?

 Enterprise beans make use of the services provided by the EJB container, such as life-cycle management. To avoid conflicts with these services, enterprise beans are restricted from performing certain operations: Managing or synchronizing threads

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