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+<!DOCTYPE html>
+<html><head>
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<link href="../sqlite.css" rel="stylesheet">
+<title>Configuring The SQLite Library</title>
+<!-- path=../ -->
+</head>
+<body>
+<div class=nosearch>
+<a href="../index.html">
+<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0">
+</a>
+<div><!-- IE hack to prevent disappearing logo --></div>
+<div class="tagline desktoponly">
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+</div>
+<div class="searchmenu" id="searchmenu">
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+<script>
+function toggle_div(nm) {
+var w = document.getElementById(nm);
+if( w.style.display=="block" ){
+w.style.display = "none";
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+w.style.display = "block";
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+function toggle_search() {
+var w = document.getElementById("searchmenu");
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+w.style.display = "none";
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+document.getElementById("searchbox").focus()
+}, 30);
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+function div_off(nm){document.getElementById(nm).style.display="none";}
+window.onbeforeunload = function(e){div_off("submenu");}
+/* Disable the Search feature if we are not operating from CGI, since */
+/* Search is accomplished using CGI and will not work without it. */
+if( !location.origin || !location.origin.match || !location.origin.match(/http/) ){
+document.getElementById("search_menubutton").style.display = "none";
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+</script>
+<!-- keywords: sqlite3_config -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Configuring The SQLite Library</h2>
+</div>
+<blockquote><pre>
+int sqlite3_config(int, ...);
+</pre></blockquote>
+<p>
+The sqlite3_config() interface is used to make global configuration
+changes to SQLite in order to tune SQLite to the specific needs of
+the application. The default configuration is recommended for most
+applications and so this routine is usually not necessary. It is
+provided to support rare applications with unusual needs.</p>
+
+<p><b>The sqlite3_config() interface is not threadsafe. The application
+must ensure that no other SQLite interfaces are invoked by other
+threads while sqlite3_config() is running.</b></p>
+
+<p>The first argument to sqlite3_config() is an integer
+<a href="../c3ref/c_config_covering_index_scan.html">configuration option</a> that determines
+what property of SQLite is to be configured. Subsequent arguments
+vary depending on the <a href="../c3ref/c_config_covering_index_scan.html">configuration option</a>
+in the first argument.</p>
+
+<p>For most configuration options, the sqlite3_config() interface
+may only be invoked prior to library initialization using
+<a href="../c3ref/initialize.html">sqlite3_initialize()</a> or after shutdown by <a href="../c3ref/initialize.html">sqlite3_shutdown()</a>.
+The exceptional configuration options that may be invoked at any time
+are called "anytime configuration options".
+If sqlite3_config() is called after <a href="../c3ref/initialize.html">sqlite3_initialize()</a> and before
+<a href="../c3ref/initialize.html">sqlite3_shutdown()</a> with a first argument that is not an anytime
+configuration option, then the sqlite3_config() call will return SQLITE_MISUSE.
+Note, however, that sqlite3_config() can be called as part of the
+implementation of an application-defined <a href="../c3ref/initialize.html">sqlite3_os_init()</a>.</p>
+
+<p>When a configuration option is set, sqlite3_config() returns <a href="../rescode.html#ok">SQLITE_OK</a>.
+If the option is unknown or SQLite is unable to set the option
+then this routine returns a non-zero <a href="../rescode.html">error code</a>.
+</p><p>See also lists of
+ <a href="../c3ref/objlist.html">Objects</a>,
+ <a href="../c3ref/constlist.html">Constants</a>, and
+ <a href="../c3ref/funclist.html">Functions</a>.</p>
+