Tag: mysql

12 articles

Fix: AWS RDS Proxy Not Working — Endpoint, IAM Auth, Connection Pinning, and Lambda VPC

May 20, 2026

How to fix AWS RDS Proxy errors — IAM authentication token mismatch, connection pinning blocking reuse, Lambda VPC routing, Secrets Manager rotation, max_connections, read/write splitter, and TLS requirement.

aws rds rds-proxy lambda postgres mysql

Fix: MySQL Replication Not Working — Replica Lag, Stopped Replication, or GTID Errors

Mar 26, 2026

How to fix MySQL replication issues — SHOW REPLICA STATUS errors, relay log corruption, GTID configuration, replication lag, skipping errors, and replica promotion.

mysql database devops debugging backend

Fix: MySQL Full-Text Search Not Working — MATCH AGAINST Returns No Results

Mar 22, 2026

How to fix MySQL full-text search issues — FULLTEXT index creation, minimum word length, stopwords, boolean mode vs natural language mode, InnoDB vs MyISAM, and LIKE fallback.

mysql database sql backend debugging

Fix: MySQL Index Not Being Used — Query Optimizer Skipping Indexes

Mar 21, 2026

How to fix MySQL indexes not being used by the query optimizer — EXPLAIN output, implicit conversions, function on columns, composite index order, cardinality issues, and forcing indexes.

mysql database backend performance debugging

Fix: MySQL Slow Query — Diagnosis and Optimization with EXPLAIN

Mar 20, 2026

How to diagnose and fix slow MySQL queries — enabling the slow query log, reading EXPLAIN output, adding indexes, fixing N+1 queries, and optimizing JOINs and ORDER BY.

mysql database performance backend debugging

Fix: MySQL Deadlock Found When Trying to Get Lock

Mar 15, 2026

How to fix MySQL 'Deadlock found when trying to get lock; try restarting transaction' — diagnosing deadlock causes, using SHOW ENGINE INNODB STATUS, and preventing deadlocks with consistent lock ordering.

mysql database debugging sql

Fix: MySQL ERROR 1064 (42000): You have an error in your SQL syntax

Mar 9, 2026

How to fix MySQL syntax error 1064 caused by typos, reserved words, wrong quotes, missing commas, version-incompatible syntax, and ORM-generated queries.

mysql database sql

Fix: MySQL ERROR 1205: Lock wait timeout exceeded

Mar 9, 2026

How to fix MySQL ERROR 1205 Lock wait timeout exceeded caused by long-running transactions, row-level locks, missing indexes, deadlocks, and InnoDB lock contention.

mysql database debugging

Fix: MySQL ERROR 1146 (42S02): Table 'database.table' doesn't exist

Mar 9, 2026

How to fix MySQL error 1146 Table doesn't exist caused by wrong database selection, case sensitivity issues, missing migrations, InnoDB tablespace corruption, and cross-OS imports.

mysql database sql

Fix: MySQL Too Many Connections – Error 1040

Feb 9, 2026

How to fix the MySQL error 1040 'Too many connections' by adjusting max_connections, fixing connection leaks, and optimizing connection pooling.

mysql database

Fix: MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket

Jan 10, 2026

How to fix MySQL ERROR 2002 (HY000) when the MySQL client can't connect through the Unix socket file on Linux, macOS, Docker, and WSL.

mysql database linux

Fix: Access denied for user 'root'@'localhost' (MySQL ERROR 1045)

Dec 13, 2025

How to fix MySQL 'ERROR 1045 (28000): Access denied for user root@localhost (using password: YES/NO)' on Linux, macOS, Windows, and Docker. Covers password reset, auth plugin issues, skip-grant-tables recovery, MySQL 8 vs 5.7 differences, and host mismatches.

mysql database docker linux