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JBoss AS 5 Development by Francesco Marchioni

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Configuring the transaction service

Transaction management is a JCA system contract between an application server and a resource adapter (and its underlying resource manager). The transaction management contract extends the connection management contract, which we just discussed. It provides support for the management of transactions.

What is a transaction? The authoritative definition of a transaction is a unit of work containing one or more operations involving one or more shared resources. Transactions are described in terms of ACID properties, which are as follows:

  • Atomicity refers to the ability to guarantee that either all or none of the tasks of a transaction are performed.
  • Consistency refers to the fact that when a transaction is completed, ...

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