How to Fix Slow MySQL Queries in cPanel
Posted about 4 months ago 4.5kSigns of Slow Queries
Symptoms: High CPU, slow page loads, 'Waiting for table lock' errors.
Identify Slow Queries
cPanel → Metrics → Resource Usage → MySQL tab → View slow query log.
phpMyAdmin Slow Query Log
Enable slow query log in MySQL configuration (host level).
Optimization Techniques
Add Database Indexes
Use EXPLAIN on slow queries → Add indexes on frequently filtered columns.
Optimize Tables
phpMyAdmin → Select database → Check all → Optimize table.
Cache Queries
Use Redis/Memcached object cache for WordPress.
Common Fixes Table
| Issue | Fix |
|---|---|
| Missing indexes | Add INDEX on WHERE/ORDER columns |
| Large tables | Optimize and repair |
| No caching | Enable object cache |
| Bad queries | Rewrite or add limits |