<header>Backup MySQL in a single transaction?</header>

When this option is set to <b>Yes</b>, MySQL backups will be performed in a
single transaction to ensure consistency. However, this can consume more RAM
when backing up a large and changing database. It can also fail with the 
error <tt> Couldn't execute 'FLUSH TABLES WITH READ LOCK'</tt> on some MySQL
versions or Amazon RDS. In this case, you should change this to <b>No</b>
instead. <p>

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