[Frankcop]

This error means WordPress can’t reach the database, and it’s usually one of these five causes:

1. Wrong database credentials: check wp-config.php for the DB name, username, password, and host. This happens most often after a migration or a hosting change.
2. Database server is down: contact your host, this is common during high traffic spikes or server maintenance.
3. Corrupted database: WordPress will sometimes show “One or more database tables are unavailable” instead, try repairing via wp-config.php with define(‘WP_ALLOW_REPAIR’, true);, then visit /wp-admin/maint/repair.php.
4. Exceeded database connection limits: shared hosting plans cap concurrent connections. If this happens during traffic spikes or sales, it’s a sign you need a better hosting plan before your next big sale.
5. Corrupted core files: re-upload fresh WordPress core files (not plugins or themes) if nothing else resolves it.

Always take a backup before touching wp-config.php or running repairs. If this happened during a traffic spike, it’s worth stress testing your hosting before your next festive sale so you’re not caught off guard again.

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