mirror of
https://github.com/berkeleydb/je.git
synced 2024-08-03 21:09:28 +00:00
115 lines
5 KiB
HTML
115 lines
5 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 Transaction Processing" />
|
||
<link rel="up" href="jebackuprestore.html" title="Chapter 5. Backing up and Restoring Berkeley DB, Java Edition Applications" />
|
||
<link rel="prev" href="backup.html" title="Performing Backups" />
|
||
<link rel="next" href="jehotfailover.html" title="Hot Failover" />
|
||
</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 5. Backing up and Restoring Berkeley DB, Java Edition Applications</th>
|
||
<td width="20%" align="right"> <a accesskey="n" href="jehotfailover.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="jecatastrophicrecovery"></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 backup of your databases. You will use
|
||
this backup to restore your database. See the previous section 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.
|
||
</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="jebackuprestore.html">Up</a>
|
||
</td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="jehotfailover.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 Failover</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|