[Berkeley DB Announce] Berkeley DB 11gR2 (11.2.5.2.28)

[Announcements related to the Berkeley DB product family.]

Product Information:

http://www.oracle.com/us/products/database/berkeley-db/index.html
http://www.oracle.com/technetwork/database/berkeleydb/overview/index.html
http://www.oracle.com/technetwork/database/berkeleydb/overview/index-085366.html


Product Downloads:

http://www.oracle.com/technetwork/database/berkeleydb/downloads/index.html

http://download.oracle.com/otn/berkeley-db/db-5.2.28.tar.gz
http://download.oracle.com/otn/berkeley-db/db-5.2.28.zip
http://download.oracle.com/otn/berkeley-db/db-5.2.28.msi
http://download.oracle.com/otn/berkeley-db/db-5.2.28.NC.tar.gz
http://download.oracle.com/otn/berkeley-db/db-5.2.28.NC.zip
http://download.oracle.com/otn/berkeley-db/dbsql-adodotnet-5.2.28.zip
-- NOTE: MD5 signatures to verify product file integrity are<download link>.md5

Product Release Overview:

Berkeley DB 5.2.28 is a major new revision of Berkeley DB with many new features, enhancements and bug fixes including:

* SQL API
	Added ADO.NET driver download bundle and support.
	Enabled MVCC (Multi-version concurrent control) via PRAGMAs. Provides additional concurrency for the SQL API.
	Enabled HA/Replication via PRAGMAs. BDB replication can now be enabled directly from SQL, including getting HA statistics.
	Enabled Sequences via custom SQLite functions. Provide transactionally protected sequence number generation for the SQL API.
	Enabled System Shared Memory configuration via PRAGMAs. Reduced on-disk footprint for shared memory regions.
	Added tuning PRAGMAs for auto_vacuum.
	Added SQLite BEGIN EXCLUSIVE TRANSACTION behavior.
	Improved application crash recovery.
	Improved SQL API documentation and examples.
	Integrated SQLite library version 3.7.6.2
* Key-value API
	Added HEAP access method. Data storage optimized forconstraineddisk-space applications.
	Added X/open compliant XA resource manager. Documented how to integrate with Oracle Tuxedo transaction manager.
* Replication
	Added Dynamic Group Membership tracking to the Replication Manager.
	Added ability to pass messages between master and replicas using the existing HA communication channels.
* Performance
	Reduced QUEUE access method locking contention. Up to 2-3X better throughput for highly concurrent multi-threaded applications.
	Enabled Trickle Writes via PRAGMAs in SQL API. Benefits for multi-threaded high write workloads.
	Modified system resource memory allocation, allowing objects to share memory regions and defer memory allocation until needed.
	Improved B-tree index performance for indexes with very large keys.
	Improved HA performance when using Master Leases.
* Etc.
	Added support for partial record get/put in C# API.
	Added "db_tuner" utility to recommend optimal B-tree page size.
	Added 32&  64-bit compatibility mode for Windows shared environments.

Consult the change log for the complete list of changes.
   http://download.oracle.com/otndocs/products/berkeleydb/html/changelog_5_2.html


Product Documentation:
http://download.oracle.com/docs/cd/E17076_02/html/toc.htm
http://www.oracle.com/technetwork/database/berkeleydb/db-faq-095848.html


Product Community, the Oracle Technology Network:

General Berkeley DB Questions:
http://forums.oracle.com/forums/forum.jspa?forumID=271

Questions about Berkeley DB's Replication and High Availability (HA) features:
http://forums.oracle.com/forums/forum.jspa?forumID=272

Licensing, Sales, and Other Questions:mailto:berkeleydb-info_us at oracle.com



Thank you for your support of Berkeley DB.

David Segleau

Product Manager | Oracle Berkeley DB

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