<?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>Chapter 7. The DB_LSN Handle</title> <link rel="stylesheet" href="apiReference.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> <link rel="start" href="index.html" title="Berkeley DB C API Reference" /> <link rel="up" href="index.html" title="Berkeley DB C API Reference" /> <link rel="prev" href="lockvec.html" title="DB_ENV->lock_vec()" /> <link rel="next" href="envget_lg_bsize.html" title="DB_ENV->get_lg_bsize()" /> </head> <body> <div xmlns="" class="navheader"> <div class="libver"> <p>Library Version 11.2.5.3</p> </div> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Chapter 7. The DB_LSN Handle </th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="lockvec.html">Prev</a> </td> <th width="60%" align="center"> </th> <td width="20%" align="right"> <a accesskey="n" href="envget_lg_bsize.html">Next</a></td> </tr> </table> <hr /> </div> <div class="chapter" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title"><a id="lsn"></a>Chapter 7. The DB_LSN Handle </h2> </div> </div> </div> <pre class="programlisting">#include <db.h> typedef struct __typedef struct __db_lsn DB_LSN; ; </pre> <p> The <code class="classname">DB_LSN</code> object is a <span class="emphasis"><em>log sequence number</em></span> which specifies a unique location in a log file. A <code class="classname">DB_LSN</code> consists of two unsigned 32-bit integers -- one specifies the log file number, and the other specifies an offset in the log file. </p> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="loglist"></a>Logging Subsystem and Related Methods</h2> </div> </div> </div> <div class="navtable"> <table border="1" width="80%"> <thead> <tr> <th>Logging Subsystem and Related Methods</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td> <a class="xref" href="logarchive.html" title="DB_ENV->log_archive()">DB_ENV->log_archive()</a> </td> <td>List log and database files</td> </tr> <tr> <td> <a class="xref" href="logfile.html" title="DB_ENV->log_file()">DB_ENV->log_file()</a> </td> <td>Map Log Sequence Numbers to log files</td> </tr> <tr> <td> <a class="xref" href="logflush.html" title="DB_ENV->log_flush()">DB_ENV->log_flush()</a> </td> <td>Flush log records</td> </tr> <tr> <td> <a class="xref" href="logprintf.html" title="DB_ENV->log_printf()">DB_ENV->log_printf()</a> </td> <td>Append informational message to the log</td> </tr> <tr> <td> <a class="xref" href="logput.html" title="DB_ENV->log_put()">DB_ENV->log_put()</a> </td> <td>Write a log record</td> </tr> <tr> <td> <a class="xref" href="logstat.html" title="DB_ENV->log_stat()">DB_ENV->log_stat()</a> </td> <td>Return log subsystem statistics</td> </tr> <tr> <td> <a class="xref" href="logstat_print.html" title="DB_ENV->log_stat_print()">DB_ENV->log_stat_print()</a> </td> <td>Print log subsystem statistics</td> </tr> <tr> <td> <a class="xref" href="logcompare.html" title="log_compare">log_compare</a> </td> <td>Compare two Log Sequence Numbers</td> </tr> <tr> <td colspan="2"> <span class="bold"> <strong>Logging Subsystem Cursors</strong> </span> </td> </tr> <tr> <td> <a class="xref" href="logcursor.html" title="DB_ENV->log_cursor()">DB_ENV->log_cursor()</a> </td> <td>Create a log cursor handle</td> </tr> <tr> <td> <a class="xref" href="logc.html" title="The DB_LOGC Handle"> The DB_LOGC Handle </a> </td> <td>A log cursor handle</td> </tr> <tr> <td> <a class="xref" href="logcclose.html" title="DB_LOGC->close()">DB_LOGC->close()</a> </td> <td>Close a log cursor</td> </tr> <tr> <td> <a class="xref" href="logcget.html" title="DB_LOGC->get()">DB_LOGC->get()</a> </td> <td>Retrieve a log record</td> </tr> <tr> <td colspan="2"> <span class="bold"> <strong>Logging Subsystem Configuration</strong> </span> </td> </tr> <tr> <td><a class="xref" href="envlog_set_config.html" title="DB_ENV->log_set_config()">DB_ENV->log_set_config()</a>, <a class="xref" href="envlog_get_config.html" title="DB_ENV->log_get_config()">DB_ENV->log_get_config()</a></td> <td>Configure the logging subsystem</td> </tr> <tr> <td><a class="xref" href="envset_lg_bsize.html" title="DB_ENV->set_lg_bsize()">DB_ENV->set_lg_bsize()</a>, <a class="xref" href="envget_lg_bsize.html" title="DB_ENV->get_lg_bsize()">DB_ENV->get_lg_bsize()</a></td> <td>Set/get log buffer size</td> </tr> <tr> <td><a class="xref" href="envset_lg_dir.html" title="DB_ENV->set_lg_dir()">DB_ENV->set_lg_dir()</a>, <a class="xref" href="envget_lg_dir.html" title="DB_ENV->get_lg_dir()">DB_ENV->get_lg_dir()</a></td> <td>Set/get the environment logging directory</td> </tr> <tr> <td><a class="xref" href="envset_lg_filemode.html" title="DB_ENV->set_lg_filemode()">DB_ENV->set_lg_filemode()</a>, <a class="xref" href="envget_lg_filemode.html" title="DB_ENV->get_lg_filemode()">DB_ENV->get_lg_filemode()</a></td> <td>Set/get log file mode</td> </tr> <tr> <td><a class="xref" href="envset_lg_max.html" title="DB_ENV->set_lg_max()">DB_ENV->set_lg_max()</a>, <a class="xref" href="envget_lg_max.html" title="DB_ENV->get_lg_max()">DB_ENV->get_lg_max()</a></td> <td>Set/get log file size</td> </tr> <tr> <td><a class="xref" href="envset_lg_regionmax.html" title="DB_ENV->set_lg_regionmax()">DB_ENV->set_lg_regionmax()</a>, <a class="xref" href="envget_lg_regionmax.html" title="DB_ENV->get_lg_regionmax()">DB_ENV->get_lg_regionmax()</a></td> <td>Set/get logging region size</td> </tr> </tbody> </table> </div> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="lockvec.html">Prev</a> </td> <td width="20%" align="center"> </td> <td width="40%" align="right"> <a accesskey="n" href="envget_lg_bsize.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">DB_ENV->lock_vec() </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> DB_ENV->get_lg_bsize()</td> </tr> </table> </div> </body> </html>