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WP-Database-Optimizer helps you to optimize your database by performing some actions for example optimizing tables, deleting revisions and data that can slow that your database. Also 
you can perform backups.
WP Database Optimizer Tools es un plugin el cual ayuda a mejorar el rendimiento de nuestra base de datos, esto es de mucha ayuda cuando sabemos que tenemos muchas visitas y necesitamos aligerar el sitio para un mejor funcionamiento.
Con WP Database Optimizer Tools se puede hacer
<pre><code>Limpiar las revisiones de post
Limpiar los autodraft
Limpiar spam
Limpiar comentarios no aprovados
Limpiar la trash de wordpress
Optimizar las tablas en la base de datos
Reparar las tablas en la base de datos
Se puede hacer un backup de la base de datos ( mas adelante pondra opcion para enviar por email el backup)
</code></pre>
<h3>Usage</h3>
<ol>
<li>Click the DB optmizer menu in your WordPress admin area.</li>
<li>Select any option to perform to your database</li>
<li>
To backup your database select DB Backup, select the tables you want to backup and download the SQL file.
*** SECURITY WARNING *** 
Your database backup contains sensitive information, 
and should not be left on the server for any extended 
period of time. The “Save to server” delivery method is provided 
as a convenience only. I will not accept any responsibility 
if other people obtain your backup file. 
*** SECURITY WARNING ***
</li>
</ol>
<h3>Past Contributors</h3>
None

WP-Database-Optimizer-Tools

WP-Database-Optimizer helps you to optimize your database by performing some actions for example optimizing tables, deleting revisions and data that c …

Delicious Brains

JRGould

Need to change your table prefix from <code>wp_</code> to something else on a site that’s already running? Not running a multisite install? Rename DB Table Prefix can probably help.
RDTP’s primary functionality is based on the great WP-CLI package, <a href="https://github.com/iandunn/wp-cli-rename-db-prefix" rel="nofollow ugc">wp-cli-rename-db-prefix</a>.
Use at your own risk and make backups before running this plugin – it is entirely possible that this could break your site and you will need to be able to restore your database and <code>wp-config.php</code> files from good backups if this happens.

Rename DB Table Prefix

Worked

Rename DB Table Prefix does what it says on the tin.

WP-Database-Optimizer-Tools vs Rename DB Table Prefix