Writing Transactional Applications with Berkeley DB, Java Edition
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Writing Transactional Applications with Berkeley DB, Java Edition

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This documentation is distributed under the terms of the Sleepycat public license. You may review the terms of this license at: http://www.sleepycat.com/download/oslicense.html

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12/20/2005

Table of Contents

Conventions Used in this Book

For More Information

1. Introduction

Transaction Benefits

A Note on System Failure
Application Requirements
Multi-threaded and Multi-process Applications

Recoverability

Performance Tuning

2. Enabling Transactions

Environments

File Naming
Error Support
Shared Memory Regions
Security Considerations

Opening a Transactional Environment and Database

3. Transaction Basics

Committing a Transaction

Non-Durable Transactions

Aborting a Transaction

Auto Commit

Nested Transactions

Transactional Cursors

Secondary Indices with Transaction Applications

Configuring the Transaction Subsystem

4. Concurrency

Which JE Handles are Free-Threaded

Locks, Blocks, and Deadlocks

Locks
Blocks
Deadlocks

The Locking Subsystem

Configuring the Locking Subsystem
Configuring Deadlock Detection
Resolving Deadlocks

Supported Degrees of Isolation
Reading Uncommitted Data
Committed Reads

Transactional Cursors and Concurrent Applications

Using Cursors with Uncommitted Data

Read/Modify/Write

No Wait on Blocks

Reverse BTree Splits

5. Managing JE Files

Checkpoints

Backup Procedures

About Unix Copy Utilities
Offline Backups
Hot Backup
Incremental Backups

Recovery Procedures

Normal Recovery
Catastrophic Recovery

Designing Your Application for Recovery

Recovery for Multi-Threaded Applications
Recovery in Multi-Process Applications

Using Hot Failovers

Removing Log Files

Configuring the Logging Subsystem

Setting the Log File Size
Configuring the Logging Region Size
Configuring In-Memory Logging
Setting the In-Memory Log Buffer Size

6. Summary and Examples

Anatomy of a Transactional Application
Transaction Example
In-Memory Transaction Example

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