Introduction When PostgreSQL logs show “configuration file contains errors” after a pg_reload_conf(), most DBAs immediately fear the worst. We were in the middle of a PostgreSQL performance tuning exercise — sequential scan audit, memory configuration review, the usual production DBA drill. After carefully calculating safe values for random_page_cost, effective_cache_size, work_mem, and wal_buffers, we fired off Read more about PostgreSQL “configuration file contains errors” — Don’t Panic, Here’s What’s Really Happening[…]