WordPress — Database
Connection errors, slow queries, deadlocks — finding the cause from logs.
WordPress "Access denied for user" database errors — credential rotation, permission grants, and silent breakage
Your WordPress site is gone.…
Read guide →
WordPress "Error establishing a database connection" — detection and root cause
You open your WordPress site and the page is gone. Instead of your homepage, the browser shows a single white page with one line of text: > Error establishing a…
Read guide →
WordPress database deadlocks — causes and detection
You open your WordPress error log after a customer complaint and see this: WordPress database error Deadlock found when trying to get lock; try restarting trans…
Read guide →
WordPress database disk full — detecting the silent failure before queries start failing
Your WordPress site is half-broken. The homepage still loads, but WP Admin throws a white error box, comments fail to save, WooCommerce checkouts stall at "Proc…
Read guide →
WordPress database timeout — when no single query is slow but the request times out
A WordPress request just timed out. nginx returned 504 Gateway Timeout, the user refreshed, the page eventually loaded, and you're staring at a slow-query log t…
Read guide →
WordPress slow queries — finding the plugin or theme responsible
Your WordPress admin takes 8 seconds to render /wp-admin/edit.php. The frontend feels sluggish on category pages. Occasionally a request times out at 30 seconds…
Read guide →
WordPress slow query surge — correlating the spike with the hook that triggered it
At 14:07 your monitoring pings you because MySQL CPU jumped from 12% to 78% in a minute. By 14:09 it is back at 12%. Five minutes later it does it again. The Wo…
Read guide →
