102 lines
3.8 KiB
HTML
102 lines
3.8 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Closing Database Environments</title>
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<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.62.4" />
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<link rel="home" href="index.html" title="Getting Started with Berkeley DB" />
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<link rel="up" href="Env.html" title="Chapter 2. Database Environments" />
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<link rel="previous" href="Env.html" title="Chapter 2. Database Environments" />
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<link rel="next" href="EnvProps.html" title="Environment Properties" />
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</head>
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<body>
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<div class="navheader">
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Closing Database Environments</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="Env.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 2. Database Environments</th>
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<td width="20%" align="right"> <a accesskey="n" href="EnvProps.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="EnvClose"></a>Closing Database Environments</h2>
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</div>
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</div>
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<div></div>
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</div>
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<p>
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You close your environment by calling the
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<tt class="methodname">Environment.close()</tt>
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method. This method performs a checkpoint, so it is not necessary to perform a sync or a checkpoint explicitly
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before calling it. For information on checkpoints, see the
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<i class="citetitle">Berkeley DB Java Edition Getting Started with Transaction Processing</i> guide.
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For information on syncs, see
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<span>
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the <i class="citetitle">Getting Started with Transaction Processing for Java</i> guide.
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</span>
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</p>
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<pre class="programlisting">import com.sleepycat.db.DatabaseException;
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import com.sleepycat.db.Environment;
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...
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try {
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if (myDbEnvironment != null) {
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myDbEnvironment.close();
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}
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} catch (DatabaseException dbe) {
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// Exception handling goes here
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} </pre>
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<p>You should close your environment(s) only after all other
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database activities have completed and you have closed any databases
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currently opened in the environment.</p>
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<p>
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Closing the last environment handle in your application causes all
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internal data structures to be
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<span>
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released.
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</span>
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If there are any opened databases or stores,
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then DB will complain before closing them as well.
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At this time, any open cursors are also closed, and any on-going transactions are aborted.
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</p>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="Env.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="Env.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="EnvProps.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">Chapter 2. Database Environments </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> Environment Properties</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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