Java / Java Transactions (JTA)

What is XA transaction?

XA is a two-phase commit protocol that is natively supported by many databases and transaction monitors.

It ensures data integrity by coordinating single transactions accessing multiple relational databases. XA guarantees that transactional updates are committed in all of the participating databases, or are fully rolled back out of all of the databases, reverting to the state prior to the start of the transaction.

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Describe Java Transaction API (JTA). Define transaction demarcation. What are the different types of transaction demarcation? Explain bean-managed transaction. Difference between a transaction and distributed transaction. Name few components involved in the distributed transaction processing (DTP). Explain resource manager in JTA context. What is resource adapter in JTA context? Explain the transactional attribute Required in JTA. Explain the transactional attribute RequiredNew in JTA. Explain the transactional attribute Mandatory. What are the different transactional attributes? What is Java Transaction Service (JTS)? What is X/Open XA architecture? What is @Transactional annotation? Does the J2EE platform support nested transactions? Should I put a transactional attribute on an asynchronous action such as sending an email? Can an entity bean use bean-managed transaction demarcation? Difference between Global transaction and local transaction. Are JTA global transactions? What is XA transaction?

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Concurrent collections

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Java / Java Transactions (JTA)

What is XA transaction?

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