Berkeley DB Java Edition
Release Notes

3.2.76, April 09, 2008

Overview

Berkeley DB Java Edition (JE) is a 100% pure Java implementation of Berkeley DB. It implements a transactional store model based on a B+Tree access method.

The documentation set for JE includes:

• JE's capabilities and features are described in the Getting Started with Berkeley DB Java Edition guide. That document also introduces the JE API set.
• For a description of how to use JE and the Direct Persistence Layer, see the Getting Started with the Direct Persistence Layer guide.
• For a description of how to use JE and the Berkeley DB Java Collections API, see the collections tutorial.
• For an overview on using transactions, see Writing Transactional Applications with Berkeley DB, Java Edition
• For a complete description of the JE API set, see the Javadoc.

This is release 3.2.76 of Berkeley DB Java Edition. The changes introduced in 3.2.76 consist of bug fixes, some additional minor functionality; the complete list of changes can also be found in the change log page.

Note: If you are using Mac OS X, please be aware of the following issue. Java version 1.4.2 on Mac OS X reports the wrong value for Runtime.maxMemory. JE calculates the default cache size as a percentage of maxMemory.  Because of this, for Java 1.4.2 on Mac OS X only, JE will assume that the Java maxMemory value is 64 MB.  With the default je.maxMemoryPercent configuration parameter (60%) the default JE cache size will be approximately 38 MB.  This default is fixed -- it does not change if the Java memory size is different than 64 MB.  To specify a different JE cache size, you must explicitly set the je.maxMemory configuration property.  The je.maxMemory property can be specified in the je.properties file or by calling EnvironmentConfig.setCacheSize.