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81 lines
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HTML
81 lines
3 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>Berkeley DB Java Edition Release Notes</title>
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</head>
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<body>
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<div class="docMain">
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<center>
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<h1>Oracle Berkeley DB Java Edition 12c R2<br>
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Release Notes</h1>
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</center>
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<!-- Note: RELEASE_VERSION and DATE are set by ant -->
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<p class="releaseInfo">Release 7.5.11, 2017-10-31 09:36:36 UTC</p>
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<h2><a name="overview">Overview</a></h2>
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<p>
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Berkeley DB Java Edition (JE) is a 100% pure Java embedded, transactional data
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store. It supplies a key/object data model with indexing, full transactional
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ACID support, POJO APIs and High Availability/Replication.
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<p>
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As of version 7.3, JE is licensed under the Apache 2.0 license. See the LICENSE
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file for the complete license.
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<p>
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Note that in JE 7.0 and later, the Java compatibility requirement for JE is
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Java SE 8.
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<p>
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JE is compatible with Java SE 8 (64-bit) and later, and has been tested and
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certified against Oracle JDK 1.8.0_121 and IBM J9 7.0. We encourage you to
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upgrade to the latest Java releases to take advantage of the latest bug fixes
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and performance improvements.
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<p>
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Be sure to see the <a href="changelog.html">change log</a> for information
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about upgrading from earlier releases.
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<p>
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This release contains a number of changes, including:
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<ol>
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<li>
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MAX_DISK and FREE_DISK configuration parameters have been added for
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limiting disk usage, and read operations are now allowed when these
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thresholds are exceeded. Previously no thresholds were used, and the
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Environment was invalidated and closed when the volume was filled.
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Allowing read operations now provides partial availability even when
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writes are no longer possible. New statistics for disk usage
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monitoring have also been added. [#25220]
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<dl>
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<dd>
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NOTE: Behavior has changed regarding the retention of data
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files reserved for replication, and specifying the new
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MAX_DISK parameter is strongly recommended for HA
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applications. Use of the new disk monitoring statistics,
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rather than monitoring of raw disk utilization, is especially
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important for HA applications due of the presence of reserved
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data files.
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</dd>
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</dl>
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</li>
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<li>
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The data verifier has been enhanced to perform Btree verification in
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order to detect internal corruption, included secondary index
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corruption. Btree verification is performed by the background data
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verifier, the DbVerify utility, the DbVerify.verify method, the
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Database.verify method and the Environment.verify method. [#25960]
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<p>
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</li>
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<li>
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Several important bug fixes are included.
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</li>
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</ol>
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For the complete and detailed list of changes, see
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<a href="changelog.html">the change log page</a>.<br>
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</p>
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<font size="1">Copyright (c) 2002, 2017 Oracle and/or its affiliates. All rights reserved.</font>
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</div>
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<!-- end docMain -->
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</body>
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</html>
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