Mediawiki
Backup database.
DATABASE=mediawiki ; mysqldump --database ${DATABASE} --single-transaction | gzip > ${DATABASE}.${HOSTNAME}.$(date '+%Y-%m-%d_%H-%M-%S').sql.gz
Truncate recentchanges.
mysql -e "TRUNCATE TABLE mediawiki.recentchanges ;"
Remove history
php maintenance/run.php deleteOldRevisions.php --delete php maintenance/run.php deleteArchivedRevisions.php --delete
Make changes take effect
php maintenance/run.php update.php php maintenance/run.php runJobs.php