blob: 9f6d7c2f98264a216af8e457142ab6f02b427d4a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>DB_CONFIG configuration file</title>
<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
<link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" />
<link rel="up" href="env.html" title="Chapter 9. The Berkeley DB Environment" />
<link rel="prev" href="env_error.html" title="Error support" />
<link rel="next" href="env_naming.html" title="File naming" />
</head>
<body>
<div xmlns="" class="navheader">
<div class="libver">
<p>Library Version 12.1.6.1</p>
</div>
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">DB_CONFIG configuration
file</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="env_error.html">Prev</a> </td>
<th width="60%" align="center">Chapter 9. The Berkeley DB Environment </th>
<td width="20%" align="right"> <a accesskey="n" href="env_naming.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="env_db_config"></a>DB_CONFIG configuration
file</h2>
</div>
</div>
</div>
<p>
Almost all of the configuration information that can be
specified to <a href="../api_reference/C/env.html" class="olink">DB_ENV class</a> methods can also be specified using
a configuration file. If a file named DB_CONFIG exists in the
database home directory, it will be read for lines of the
format <span class="bold"><strong>NAME VALUE</strong></span>.
</p>
<p>
One or more whitespace characters are used to delimit the
two parts of the line, and trailing whitespace characters are
discarded. All empty lines or lines whose first character is a
whitespace or hash (<span class="bold"><strong>#</strong></span>)
character will be ignored. Each line must specify both the
NAME and the VALUE of the pair. The specific NAME VALUE pairs
are documented in the manual for the corresponding methods
(for example, the <a href="../api_reference/C/envadd_data_dir.html" class="olink">DB_ENV->add_data_dir()</a> documentation includes
NAME VALUE pair information Berkeley DB administrators can use
to configure locations for database files).
</p>
<p><a id="env_db_config.DB_CONFIG"></a>
The DB_CONFIG configuration
file is intended to allow database environment administrators
to customize environments independent of applications using
the environment. For example, a database administrator can
move the database log and data files to a different location
without application recompilation. In addition, because the
DB_CONFIG file is read when the database environment is
opened, it can be used to overrule application configuration
done before that time. For example a database administrator
could override the compiled-in application cache size to a
size more appropriate for a specific machine.
</p>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="env_error.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="env.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="env_naming.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">Error support </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> File naming</td>
</tr>
</table>
</div>
</body>
</html>
|
