mirror of
https://github.com/yasuhirokimura/db18
synced 2026-06-08 18:29:23 +00:00
Yasuhiro KIMURA
194 lines
7.2 KiB
HTML
194 lines
7.2 KiB
HTML
<?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_ENV->set_tx_timestamp()</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="txn.html" title="Chapter 12. The DB_TXN Handle" />
|
||
<link rel="prev" href="envset_tx_max.html" title="DB_ENV->set_tx_max()" />
|
||
<link rel="next" href="txnrecover.html" title="DB_ENV->txn_recover()" />
|
||
</head>
|
||
<body>
|
||
<div xmlns="" class="navheader">
|
||
<div class="libver">
|
||
<p>Library Version 18.1.40</p>
|
||
</div>
|
||
<table width="100%" summary="Navigation header">
|
||
<tr>
|
||
<th colspan="3" align="center">
|
||
<span xmlns="http://www.w3.org/1999/xhtml">DB_ENV->set_tx_timestamp()</span>
|
||
|
||
</th>
|
||
</tr>
|
||
<tr>
|
||
<td width="20%" align="left"><a accesskey="p" href="envset_tx_max.html">Prev</a> </td>
|
||
<th width="60%" align="center">Chapter 12.
|
||
The DB_TXN Handle
|
||
</th>
|
||
<td width="20%" align="right"> <a accesskey="n" href="txnrecover.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="envset_tx_timestamp"></a>
|
||
<span>DB_ENV->set_tx_timestamp()</span>
|
||
|
||
</h2>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<pre class="programlisting">#include <db.h>
|
||
|
||
int
|
||
DB_ENV->set_tx_timestamp(DB_ENV *dbenv, time_t *timestamp); </pre>
|
||
<p>
|
||
Recover to the time specified by <span class="bold"><strong>timestamp</strong></span> rather than to the most current
|
||
possible date.
|
||
</p>
|
||
<p>
|
||
Once a database environment has been upgraded to a new version of
|
||
Berkeley DB involving a log format change
|
||
(see <a href="../../upgrading/upgrade_process.html" class="olink">Upgrading Berkeley DB installations</a>),
|
||
it is no longer possible to recover to a
|
||
specific time before that upgrade.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->set_tx_timestamp()</code> method configures operations performed
|
||
using the specified <a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a> handle, not all
|
||
operations performed on the underlying database environment.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->set_tx_timestamp()</code> method may not be called after the
|
||
<a class="xref" href="envopen.html" title="DB_ENV->open()">
|
||
<span>DB_ENV->open()</span>
|
||
|
||
</a> method is
|
||
called.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->set_tx_timestamp()</code> <span>
|
||
<span>
|
||
method returns a non-zero error value on failure and 0 on success.
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idm139753796099280"></a>Parameters</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idm139753796074480"></a>timestamp</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <span class="bold"><strong>timestamp</strong></span> parameter references
|
||
the memory location where the recovery timestamp is located.
|
||
</p>
|
||
<p>
|
||
The <span class="bold"><strong>timestamp</strong></span> parameter should be the
|
||
number of seconds since 0 hours, 0 minutes, 0 seconds, January 1,
|
||
1970, Coordinated Universal Time; that is, the Epoch.
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idm139753796072752"></a>Errors</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->set_tx_timestamp()</code> <span>
|
||
<span>
|
||
method may fail and return one of the following non-zero errors:
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idm139753796035296"></a>EINVAL</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
If it is not possible to recover to the specified time using the log
|
||
files currently present in the environment; or if an invalid flag
|
||
value or parameter was specified.
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idm139753796037376"></a>Class</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>,
|
||
<a class="link" href="txn.html" title="Chapter 12. The DB_TXN Handle">DB_TXN</a>
|
||
</p>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idm139753796089472"></a>See Also</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="xref" href="txn.html#txnlist" title="Transaction Subsystem and Related Methods">Transaction Subsystem and Related Methods</a>
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="navfooter">
|
||
<hr />
|
||
<table width="100%" summary="Navigation footer">
|
||
<tr>
|
||
<td width="40%" align="left"><a accesskey="p" href="envset_tx_max.html">Prev</a> </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="u" href="txn.html">Up</a>
|
||
</td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="txnrecover.html">Next</a></td>
|
||
</tr>
|
||
<tr>
|
||
<td width="40%" align="left" valign="top">
|
||
<span>DB_ENV->set_tx_max()</span>
|
||
|
||
</td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="h" href="index.html">Home</a>
|
||
</td>
|
||
<td width="40%" align="right" valign="top">
|
||
<span>DB_ENV->txn_recover()</span>
|
||
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|