7
Transaction Handling

In Oracle8i, Enterprise JavaBeans use Java Transaction API (JTA) 1.0.1 for managing transactions. JTA provides the ability for both bean-managed and container-managed transactions:

• Bean-managed transactions are programmatically demarcated within your bean implementation. The transaction is completely controlled by the application.

• Container-managed transactions are controlled by the container. That is, the container either joins the client's transaction or starts the transaction for the application--as defined within the deployment descriptor--and ends the transaction when the bean completes. Your implementation does not need to provide code for managing the transaction.

This chapter assumes that you have a working knowledge of JTA. The discussion focuses mostly on examples and explaining the differences between the Sun Microsystems JTA specification and the Oracle JTA implementation. See http://www.javasoft.com for the Sun Microsystems JTA specification.

• Transaction Overview

• JTA Server-Side Demarcation

• JTA Client-Side Demarcation

• Configuring Two-Phase Commit Engine

• Creating DataSource Objects Dynamically

• Setting the Transaction Timeout

• JDBC Restrictions

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