PostgreSQL Troubleshooting Guides

PostgreSQL errors can surface at the worst possible moments — during deployments, under peak traffic, or in the middle of critical operations. This collection of 3 troubleshooting guides covers the most common PostgreSQL issues encountered in Linux server administration and system operations. Each article walks through specific error messages with step-by-step diagnosis, root cause analysis, and verified solutions. Whether you're dealing with configuration problems, authentication failures, timeout errors, or unexpected behavior, these guides are designed to get you from error message to resolution as quickly as possible. Solutions are backed by official documentation and real-world production experience.

Error Quick Reference

Article	Description
PostgreSQL 'Connection Refused': Fix Service Failures, OOM, High CPU, Segfaults, and Crashes	Fix PostgreSQL connection refused errors fast. Step-by-step commands for service not starting, disk full, OOM kills, too many connections, segfaults, and high C
Troubleshooting 'PostgreSQL Connection Refused': Resolving Crashes, OOM, and Service Failures on Linux	Fix 'psql: error: connection to server failed: Connection refused'. Learn to diagnose PostgreSQL crashes, OOM errors, max connections, and disk full issues.
Troubleshooting PostgreSQL Connection Refused & Service Failures	A complete DevOps guide to fixing PostgreSQL connection refused errors, service crashes, OOM, disk full, high CPU, and too many connections.