The XA specification for Distributed Transaction Processing (Doc ID 180207.1)

Last updated on DECEMBER 16, 2023

Applies to:

Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.2.0.3 [Release 9.2 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Information in this document applies to any platform.

Purpose

The purpose of this document is to discuss the XA specification for Distributed Transaction Processing
and explain how this leads to the generation of a standard xa.h file.

Scope

This document is intended for general use. It should be read by anyone wanting to understand more about the XA specification.

Details

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In this Document

Distributed Transaction Processing

Application Program

Resource Manager

Global Transactions

Transaction Branches

Transaction Manager

Thread of Control

Tightly and Loosely Coupled Threads

Transaction Control and Recovery

Rolling Back the Global Transaction

Opening and Closing Resource Managers

Association of Threads with Transaction Branches

Transaction branch states

Transaction Context

Registration of Resource Managers

Dynamic Registration

Branch Completion

Synchronous, Non-blocking and Asynchronous Modes

Failure Recovery

Naming Conventions

1. Transaction Identification

2. Resource Manager Switch

3. Flag Definitions

4. Return Codes

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