1<?xml version="1.0" encoding="UTF-8" standalone="no"?>
2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
3<html xmlns="http://www.w3.org/1999/xhtml">
4  <head>
5    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
6    <title>Closing Database Environments</title>
7    <link rel="stylesheet" href="gettingStarted.css" type="text/css" />
8    <meta name="generator" content="DocBook XSL Stylesheets V1.62.4" />
9    <link rel="home" href="index.html" title="Getting Started with Berkeley DB" />
10    <link rel="up" href="Env.html" title="Chapter 2. Database Environments" />
11    <link rel="previous" href="Env.html" title="Chapter 2. Database Environments" />
12    <link rel="next" href="EnvProps.html" title="Environment Properties" />
13  </head>
14  <body>
15    <div class="navheader">
16      <table width="100%" summary="Navigation header">
17        <tr>
18          <th colspan="3" align="center">Closing Database Environments</th>
19        </tr>
20        <tr>
21          <td width="20%" align="left"><a accesskey="p" href="Env.html">Prev</a> </td>
22          <th width="60%" align="center">Chapter 2. Database Environments</th>
23          <td width="20%" align="right"> <a accesskey="n" href="EnvProps.html">Next</a></td>
24        </tr>
25      </table>
26      <hr />
27    </div>
28    <div class="sect1" lang="en" xml:lang="en">
29      <div class="titlepage">
30        <div>
31          <div>
32            <h2 class="title" style="clear: both"><a id="EnvClose"></a>Closing Database Environments</h2>
33          </div>
34        </div>
35        <div></div>
36      </div>
37      <p>
38    You close your environment by calling the 
39    <tt class="methodname">Environment.close()</tt>
40    method. This method performs a checkpoint, so it is not necessary to perform a sync or a checkpoint explicitly
41    before calling it. For information on checkpoints, see the
42    <i class="citetitle">Berkeley DB Java Edition Getting Started with Transaction Processing</i> guide.
43    For information on syncs, see 
44    
45    
46    <span>
47    the <i class="citetitle">Getting Started with Transaction Processing for Java</i> guide.
48    </span>
49    </p>
50      <pre class="programlisting">import com.sleepycat.db.DatabaseException;
51
52import com.sleepycat.db.Environment;
53
54...
55
56try {
57    if (myDbEnvironment != null) {
58        myDbEnvironment.close();
59    } 
60} catch (DatabaseException dbe) {
61    // Exception handling goes here
62} </pre>
63      <p>You should close your environment(s) only after all other
64    database activities have completed and you have closed any databases
65    currently opened in the environment.</p>
66      <p>
67    Closing the last environment handle in your application causes all
68    internal data structures to be 
69    
70    <span>
71            released.
72    </span>
73    
74    
75    
76    If there are any opened databases or stores, 
77    then DB will complain before closing them as well. 
78    At this time, any open cursors are also closed, and any on-going transactions are aborted.
79    </p>
80    </div>
81    <div class="navfooter">
82      <hr />
83      <table width="100%" summary="Navigation footer">
84        <tr>
85          <td width="40%" align="left"><a accesskey="p" href="Env.html">Prev</a> </td>
86          <td width="20%" align="center">
87            <a accesskey="u" href="Env.html">Up</a>
88          </td>
89          <td width="40%" align="right"> <a accesskey="n" href="EnvProps.html">Next</a></td>
90        </tr>
91        <tr>
92          <td width="40%" align="left" valign="top">Chapter 2. Database Environments </td>
93          <td width="20%" align="center">
94            <a accesskey="h" href="index.html">Home</a>
95          </td>
96          <td width="40%" align="right" valign="top"> Environment Properties</td>
97        </tr>
98      </table>
99    </div>
100  </body>
101</html>
102