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Optimize the WordPress database

cautionWP-CLIalle

Caution: This command changes the system. Understand what it does before you run it.

Adjust the values, the command updates live
user@server
wp db optimize --path=/var/www/vhosts/example.com/httpdocs

Runs mysqlcheck --optimize on the database from wp-config.php. InnoDB tables are rebuilt, which can reclaim space after deleting many revisions or transients. Worthwhile after larger cleanups.

Note: Tables may be locked briefly during optimization. Run it outside peak hours on large databases.

Also searched as

  • clean up wordpress database
  • remove database overhead
  • wordpress slow database

Related one-liners

All in WP-CLI

Delete expired transients from the WordPress database

$wp transient delete --expired --path=/var/www/vhosts/example.com/httpdocs
cautionWP-CLI

Find the largest autoloaded options in WordPress

$wp option list --autoload=on --orderby=size_bytes --order=desc --fields=option_name,size_bytes --path=/var/www/vhosts/example.com/httpdocs | head -n 20
harmlessWP-CLI

Back up the WordPress database as a gzip file

$wp db export - --path=/var/www/vhosts/example.com/httpdocs | gzip > /var/www/vhosts/example.com/db-backup.sql.gz
harmlessWP-CLI

Delete all post revisions

$wp post list --post_type=revision --format=ids --path=/var/www/vhosts/example.com/httpdocs | xargs -r wp post delete --force --path=/var/www/vhosts/example.com/httpdocs
destructiveWP-CLI

Import a gzipped dump into the WordPress database

$gunzip -c /var/www/vhosts/example.com/db-backup.sql.gz | wp db import - --path=/var/www/vhosts/example.com/httpdocs
destructiveWP-CLI

Permanently delete all spam comments

$wp comment list --status=spam --format=ids --path=/var/www/vhosts/example.com/httpdocs | xargs -r wp comment delete --force --path=/var/www/vhosts/example.com/httpdocs
destructiveWP-CLI

Read first, then run.

The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

  • All commands are provided without warranty and are not tested on every system.
  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
  • You run commands at your own risk. Liability for damages is excluded to the extent permitted by law.