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  • what are Container-Managed Transactional attributes ? view answer
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  • Q. what are Container-Managed Transactional arributes ? view answer
  • What is the default transaction attribute for an EJB? view answer
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!!! EJB Frequently Asked Questions !!!

What are transaction isolation levels in EJB?

SCJP 1.5/1.6 Exam Kit

!!!Answer!!!- From Technical Expert

1. Transaction_read_uncommitted- Allows a method to read uncommitted data from a DB(fast but not wise).

2. Transaction_read_committed- Guarantees that the data you are getting has been committed.

3. Transaction_repeatable_read - Guarantees that all reads of the database will be the same during the transaction (good for read and update operations).

4. Transaction_serializable- All the transactions for resource are performed serial.


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