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diff --git a/www/c3ref/wal_autocheckpoint.html b/www/c3ref/wal_autocheckpoint.html new file mode 100644 index 0000000..2b74b79 --- /dev/null +++ b/www/c3ref/wal_autocheckpoint.html @@ -0,0 +1,155 @@ +<!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>Configure an auto-checkpoint</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"> +Small. Fast. 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Passing zero or +a negative value as the nFrame parameter disables automatic +checkpoints entirely.</p> + +<p>The callback registered by this function replaces any existing callback +registered using <a href="../c3ref/wal_hook.html">sqlite3_wal_hook()</a>. Likewise, registering a callback +using <a href="../c3ref/wal_hook.html">sqlite3_wal_hook()</a> disables the automatic checkpoint mechanism +configured by this function.</p> + +<p>The <a href="../pragma.html#pragma_wal_autocheckpoint">wal_autocheckpoint pragma</a> can be used to invoke this interface +from SQL.</p> + +<p>Checkpoints initiated by this mechanism are +<a href="../c3ref/wal_checkpoint_v2.html">PASSIVE</a>.</p> + +<p>Every new <a href="../c3ref/sqlite3.html">database connection</a> defaults to having the auto-checkpoint +enabled with a threshold of 1000 or <a href="../compile.html#default_wal_autocheckpoint">SQLITE_DEFAULT_WAL_AUTOCHECKPOINT</a> +pages. The use of this interface +is only necessary if the default setting is found to be suboptimal +for a particular application. +</p><p>See also lists of + <a href="objlist.html">Objects</a>, + <a href="constlist.html">Constants</a>, and + <a href="funclist.html">Functions</a>.</p> + |