mirror of
https://github.com/berkeleydb/je.git
synced 2024-11-15 01:46:24 +00:00
118 lines
5.3 KiB
HTML
118 lines
5.3 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>Performing Catastrophic Recovery</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="Getting Started with Berkeley DB Java Edition" />
|
|||
|
|
<link rel="up" href="backuprestore.html" title="Chapter 11. Backing up and Restoring Berkeley DB Java Edition Applications" />
|
|||
|
|
<link rel="prev" href="backup.html" title="Performing Backups" />
|
|||
|
|
<link rel="next" href="hotfailover.html" title="Hot Standby" />
|
|||
|
|
</head>
|
|||
|
|
<body>
|
|||
|
|
<div xmlns="" class="navheader">
|
|||
|
|
<div class="libver">
|
|||
|
|
<p>Library Version 12.2.7.5</p>
|
|||
|
|
</div>
|
|||
|
|
<table width="100%" summary="Navigation header">
|
|||
|
|
<tr>
|
|||
|
|
<th colspan="3" align="center">Performing Catastrophic Recovery</th>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td width="20%" align="left"><a accesskey="p" href="backup.html">Prev</a> </td>
|
|||
|
|
<th width="60%" align="center">Chapter 11. Backing up and Restoring Berkeley DB Java Edition Applications</th>
|
|||
|
|
<td width="20%" align="right"> <a accesskey="n" href="hotfailover.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="catastrophicrecovery"></a>Performing Catastrophic Recovery</h2>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<p>
|
|||
|
|
Catastrophic recovery is necessary whenever your environment and/or database have been lost or corrupted
|
|||
|
|
due to a media failure (disk failure, for example). Catastrophic recovery is also required if normal
|
|||
|
|
recovery fails for any reason.
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
In order to perform catastrophic recovery, you must have a full back up of your databases. You will use
|
|||
|
|
this backup to restore your database. See <a class="xref" href="backup.html" title="Performing Backups">Performing Backups</a> for
|
|||
|
|
information on running back ups.
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
To perform catastrophic recovery:
|
|||
|
|
</p>
|
|||
|
|
<div class="orderedlist">
|
|||
|
|
<ol type="1">
|
|||
|
|
<li>
|
|||
|
|
<p>
|
|||
|
|
Shut down your application.
|
|||
|
|
</p>
|
|||
|
|
</li>
|
|||
|
|
<li>
|
|||
|
|
<p>
|
|||
|
|
Delete the contents of your environment home directory (the one that experienced a catastrophic
|
|||
|
|
failure), if there is anything there.
|
|||
|
|
</p>
|
|||
|
|
</li>
|
|||
|
|
<li>
|
|||
|
|
<p>
|
|||
|
|
Copy your most recent full backup into your environment home directory.
|
|||
|
|
If you are using subdirectories to store your log files, be sure to place
|
|||
|
|
the recovered log files back into the subdirectory from which they were
|
|||
|
|
originally backed up.
|
|||
|
|
</p>
|
|||
|
|
</li>
|
|||
|
|
<li>
|
|||
|
|
<p>
|
|||
|
|
If you are using a backup utility that runs incremental backups of your
|
|||
|
|
environment directory, copy any log files generated since the time of your
|
|||
|
|
last full backup. Be sure to restore all log files in the order that they
|
|||
|
|
were written. The order is important because it is possible the same log
|
|||
|
|
file appears in multiple archives, and you want to run recovery using the
|
|||
|
|
most recent version of each log file. Also, if you are using subdirectories to
|
|||
|
|
store your log files, be sure to maintain the relationship between your log files
|
|||
|
|
and the subdirectory in which JE originally placed them.
|
|||
|
|
</p>
|
|||
|
|
</li>
|
|||
|
|
<li>
|
|||
|
|
<p>
|
|||
|
|
Open the environment as normal. JE's normal recovery will run, which will bring your database
|
|||
|
|
to a consistent state relative to the changed data found in your log files.
|
|||
|
|
</p>
|
|||
|
|
</li>
|
|||
|
|
</ol>
|
|||
|
|
</div>
|
|||
|
|
<p>
|
|||
|
|
You are now done restoring your database.
|
|||
|
|
</p>
|
|||
|
|
</div>
|
|||
|
|
<div class="navfooter">
|
|||
|
|
<hr />
|
|||
|
|
<table width="100%" summary="Navigation footer">
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left"><a accesskey="p" href="backup.html">Prev</a> </td>
|
|||
|
|
<td width="20%" align="center">
|
|||
|
|
<a accesskey="u" href="backuprestore.html">Up</a>
|
|||
|
|
</td>
|
|||
|
|
<td width="40%" align="right"> <a accesskey="n" href="hotfailover.html">Next</a></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left" valign="top">Performing Backups </td>
|
|||
|
|
<td width="20%" align="center">
|
|||
|
|
<a accesskey="h" href="index.html">Home</a>
|
|||
|
|
</td>
|
|||
|
|
<td width="40%" align="right" valign="top"> Hot Standby</td>
|
|||
|
|
</tr>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|